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<span>Climate</span> </div> </a> <ul id="toc-Climate-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Natural_history" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Natural_history"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Natural history</span> </div> </a> <ul id="toc-Natural_history-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Demographics_and_sociology" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Demographics_and_sociology"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Demographics and sociology</span> </div> </a> <ul id="toc-Demographics_and_sociology-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Intermountain_states" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Intermountain_states"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Intermountain states</span> </div> </a> <ul id="toc-Intermountain_states-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> 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<div class="mw-indicators"> <div id="mw-indicator-coordinates" class="mw-indicator"><div class="mw-parser-output"><span id="coordinates"><a href="/wiki/Geographic_coordinate_system" title="Geographic coordinate system">Coordinates</a>: <style data-mw-deduplicate="TemplateStyles:r1156832818">.mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-parser-output .geo-inline-hidden{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}</style><span class="plainlinks nourlexpansion"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Intermountain_West&params=40_N_115_W_type:adm1st_region:US_scale:5000000"><span class="geo-default"><span class="geo-dms" title="Maps, aerial photos, and other data for this location"><span class="latitude">40°N</span> <span class="longitude">115°W</span></span></span><span class="geo-multi-punct"> / </span><span class="geo-nondefault"><span class="geo-dec" title="Maps, aerial photos, and other data for this location">40°N 115°W</span><span style="display:none"> / <span class="geo">40; -115</span></span></span></a></span></span></div></div> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Geographic region of the Western United States</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Mountain_states" title="Mountain states">Mountain states</a></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">For other uses, see <a href="/wiki/Intermountain_(disambiguation)" class="mw-redirect mw-disambig" title="Intermountain (disambiguation)">Intermountain (disambiguation)</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-More_citations_needed plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>needs additional 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Unsourced material may be challenged and removed.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22Intermountain+West%22">"Intermountain West"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Intermountain+West%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Intermountain+West%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22Intermountain+West%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Intermountain+West%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Intermountain+West%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">July 2013</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Geographic and geological region of the United States</div><style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><style data-mw-deduplicate="TemplateStyles:r1043192559">.mw-parser-output .ib-settlement{width:23em;border-collapse:collapse;line-height:1.2em}.mw-parser-output .ib-settlement td,.mw-parser-output .ib-settlement th{border-top:1px solid #a2a9b1;padding:0.4em 0.6em 0.4em 0.6em}.mw-parser-output .ib-settlement .mergedtoprow .infobox-full-data,.mw-parser-output .ib-settlement .mergedtoprow .infobox-header,.mw-parser-output .ib-settlement .mergedtoprow .infobox-data,.mw-parser-output .ib-settlement .mergedtoprow .infobox-label,.mw-parser-output .ib-settlement .mergedtoprow .infobox-below{border-top:1px solid #a2a9b1;padding:0.4em 0.6em 0.2em 0.6em}.mw-parser-output .ib-settlement .mergedrow .infobox-full-data,.mw-parser-output .ib-settlement .mergedrow .infobox-data,.mw-parser-output .ib-settlement .mergedrow .infobox-label{border:0;padding:0 0.6em 0.2em 0.6em}.mw-parser-output .ib-settlement .mergedbottomrow .infobox-full-data,.mw-parser-output .ib-settlement .mergedbottomrow .infobox-data,.mw-parser-output .ib-settlement .mergedbottomrow .infobox-label{border-top:0;border-bottom:1px solid #a2a9b1;padding:0 0.6em 0.4em 0.6em}.mw-parser-output .ib-settlement .maptable{border:0;padding:0}.mw-parser-output .ib-settlement .infobox-header,.mw-parser-output .ib-settlement .infobox-below{text-align:left}.mw-parser-output .ib-settlement .infobox-above{font-size:125%;line-height:1.3em}.mw-parser-output .ib-settlement .infobox-subheader{background-color:#cddeff;font-weight:bold}.mw-parser-output .ib-settlement-native{font-weight:normal;padding-top:0.2em}.mw-parser-output .ib-settlement-other-name{font-size:78%}.mw-parser-output .ib-settlement-official{font-weight:bold}.mw-parser-output .ib-settlement-caption{padding:0.3em 0 0 0}.mw-parser-output .ib-settlement-caption-link{padding:0.2em 0}.mw-parser-output .ib-settlement-nickname{display:inline}.mw-parser-output .ib-settlement-fn{font-weight:normal;display:inline}</style><table class="infobox ib-settlement vcard"><tbody><tr><th colspan="2" class="infobox-above"><div class="fn org">Intermountain West</div></th></tr><tr><td colspan="2" class="infobox-subheader"><div class="category">Geographic and geological region of the United States</div></td></tr><tr class="mergedtoprow"><td colspan="2" class="infobox-full-data"><span typeof="mw:File"><a href="/wiki/File:Intermountain_West.svg" class="mw-file-description" title="Map of the Intermountain West by county. Counties in red are always included, while counties in pink are only sometimes included."><img alt="Map of the Intermountain West by county. Counties in red are always included, while counties in pink are only sometimes included." src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Intermountain_West.svg/250px-Intermountain_West.svg.png" decoding="async" width="250" height="356" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Intermountain_West.svg/375px-Intermountain_West.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Intermountain_West.svg/500px-Intermountain_West.svg.png 2x" data-file-width="386" data-file-height="550" /></a></span><div class="ib-settlement-caption">Map of the Intermountain West by county. Counties in red are always included, while counties in pink are only sometimes included.</div></td></tr><tr class="mergedrow"><th scope="row" class="infobox-label">Country</th><td class="infobox-data"><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/a/a4/Flag_of_the_United_States.svg/23px-Flag_of_the_United_States.svg.png" decoding="async" width="23" height="12" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/a/a4/Flag_of_the_United_States.svg/35px-Flag_of_the_United_States.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/a/a4/Flag_of_the_United_States.svg/46px-Flag_of_the_United_States.svg.png 2x" data-file-width="1235" data-file-height="650" /></span></span> </span><a href="/wiki/United_States" title="United States">United States</a></td></tr><tr class="mergedrow"><th scope="row" class="infobox-label">States</th><td class="infobox-data"><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Flag_of_Arizona.svg/23px-Flag_of_Arizona.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Flag_of_Arizona.svg/35px-Flag_of_Arizona.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Flag_of_Arizona.svg/45px-Flag_of_Arizona.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/Arizona" title="Arizona">Arizona</a><br /> <span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/01/Flag_of_California.svg/23px-Flag_of_California.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/01/Flag_of_California.svg/35px-Flag_of_California.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/01/Flag_of_California.svg/45px-Flag_of_California.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/California" title="California">California</a><br /> <span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/46/Flag_of_Colorado.svg/23px-Flag_of_Colorado.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/46/Flag_of_Colorado.svg/35px-Flag_of_Colorado.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/46/Flag_of_Colorado.svg/45px-Flag_of_Colorado.svg.png 2x" data-file-width="1800" data-file-height="1200" /></span></span> </span><a href="/wiki/Colorado" title="Colorado">Colorado</a><br /> <span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Flag_of_Idaho.svg/19px-Flag_of_Idaho.svg.png" decoding="async" width="19" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Flag_of_Idaho.svg/29px-Flag_of_Idaho.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Flag_of_Idaho.svg/38px-Flag_of_Idaho.svg.png 2x" data-file-width="3168" data-file-height="2496" /></span></span> </span><a href="/wiki/Idaho" title="Idaho">Idaho</a><br /> <span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Flag_of_Montana.svg/23px-Flag_of_Montana.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Flag_of_Montana.svg/35px-Flag_of_Montana.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Flag_of_Montana.svg/45px-Flag_of_Montana.svg.png 2x" data-file-width="768" data-file-height="512" /></span></span> </span><a href="/wiki/Montana" title="Montana">Montana</a><br /> <span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f1/Flag_of_Nevada.svg/23px-Flag_of_Nevada.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f1/Flag_of_Nevada.svg/35px-Flag_of_Nevada.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f1/Flag_of_Nevada.svg/45px-Flag_of_Nevada.svg.png 2x" data-file-width="600" data-file-height="400" /></span></span> </span><a href="/wiki/Nevada" title="Nevada">Nevada</a><br /> <span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Flag_of_New_Mexico.svg/23px-Flag_of_New_Mexico.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Flag_of_New_Mexico.svg/35px-Flag_of_New_Mexico.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c3/Flag_of_New_Mexico.svg/45px-Flag_of_New_Mexico.svg.png 2x" data-file-width="1800" data-file-height="1200" /></span></span> </span><a href="/wiki/New_Mexico" title="New Mexico">New Mexico</a><br /> <span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Flag_of_Oregon.svg/23px-Flag_of_Oregon.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Flag_of_Oregon.svg/35px-Flag_of_Oregon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Flag_of_Oregon.svg/45px-Flag_of_Oregon.svg.png 2x" data-file-width="768" data-file-height="512" /></span></span> </span><a href="/wiki/Oregon" title="Oregon">Oregon</a><br /> <span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Flag_of_Texas.svg/23px-Flag_of_Texas.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Flag_of_Texas.svg/35px-Flag_of_Texas.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Flag_of_Texas.svg/45px-Flag_of_Texas.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span> </span><a href="/wiki/Texas" title="Texas">Texas</a><br /> <span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Flag_of_Utah.svg/23px-Flag_of_Utah.svg.png" decoding="async" width="23" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Flag_of_Utah.svg/35px-Flag_of_Utah.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Flag_of_Utah.svg/46px-Flag_of_Utah.svg.png 2x" data-file-width="720" data-file-height="432" /></span></span> </span><a href="/wiki/Utah" title="Utah">Utah</a><br /> <span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/54/Flag_of_Washington.svg/23px-Flag_of_Washington.svg.png" decoding="async" width="23" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/54/Flag_of_Washington.svg/35px-Flag_of_Washington.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/54/Flag_of_Washington.svg/46px-Flag_of_Washington.svg.png 2x" data-file-width="1106" data-file-height="658" /></span></span> </span><a href="/wiki/Washington_(state)" title="Washington (state)">Washington</a><br /> <span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Flag_of_Wyoming.svg/22px-Flag_of_Wyoming.svg.png" decoding="async" width="22" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Flag_of_Wyoming.svg/33px-Flag_of_Wyoming.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Flag_of_Wyoming.svg/43px-Flag_of_Wyoming.svg.png 2x" data-file-width="1000" data-file-height="700" /></span></span> </span><a href="/wiki/Wyoming" title="Wyoming">Wyoming</a><br /></td></tr></tbody></table> <style data-mw-deduplicate="TemplateStyles:r1238443738">.mw-parser-output .locmap .od{position:absolute}.mw-parser-output .locmap .id{position:absolute;line-height:0}.mw-parser-output .locmap .l0{font-size:0;position:absolute}.mw-parser-output .locmap .pv{line-height:110%;position:absolute;text-align:center}.mw-parser-output .locmap .pl{line-height:110%;position:absolute;top:-0.75em;text-align:right}.mw-parser-output .locmap .pr{line-height:110%;position:absolute;top:-0.75em;text-align:left}.mw-parser-output .locmap .pv>div{display:inline;padding:1px}.mw-parser-output .locmap .pl>div{display:inline;padding:1px;float:right}.mw-parser-output .locmap .pr>div{display:inline;padding:1px;float:left}@media screen{html.skin-theme-clientpref-night .mw-parser-output .od,html.skin-theme-clientpref-night .mw-parser-output .od .pv>div,html.skin-theme-clientpref-night .mw-parser-output .od .pl>div,html.skin-theme-clientpref-night .mw-parser-output .od .pr>div{background:#fff!important;color:#000!important}html.skin-theme-clientpref-night .mw-parser-output .locmap{filter:grayscale(0.6)}html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data .locmap div{background:transparent!important}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .locmap{filter:grayscale(0.6)}html.skin-theme-clientpref-os .mw-parser-output .od,html.skin-theme-clientpref-os .mw-parser-output .od .pv>div,html.skin-theme-clientpref-os .mw-parser-output .od .pl>div,html.skin-theme-clientpref-os .mw-parser-output .od .pr>div{background:white!important;color:#000!important}html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data .locmap div{background:transparent!important}}</style><div class="locmap noviewer noresize thumb tright"><div class="thumbinner" style="width:302px"><div style="position:relative;width:300px;border:1px solid lightgray"><span class="notpageimage" typeof="mw:File"><a href="/wiki/File:USA_Region_West_relief_location_map.jpg" class="mw-file-description" title="Intermountain West is located in USA West"><img alt="Intermountain West is located in USA West" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/06/USA_Region_West_relief_location_map.jpg/300px-USA_Region_West_relief_location_map.jpg" decoding="async" width="300" height="336" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/06/USA_Region_West_relief_location_map.jpg/450px-USA_Region_West_relief_location_map.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/06/USA_Region_West_relief_location_map.jpg/600px-USA_Region_West_relief_location_map.jpg 2x" data-file-width="1867" data-file-height="2091" /></a></span><div class="od notheme" style="top:44.811%;left:44.715%;font-size:91%"><div class="id" style="left:-1px;top:-1px"><span class="notpageimage" typeof="mw:File"><span title="Intermountain West"><img alt="Intermountain West" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/1px-Red_pog.svg.png" decoding="async" width="1" height="1" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0c/Red_pog.svg/2px-Red_pog.svg.png 1.5x" data-file-width="64" data-file-height="64" /></span></span></div><div class="pr" style="width:6em;left:2px"><div>Intermountain West</div></div></div></div><div class="thumbcaption"><div class="magnify"><a href="/wiki/File:USA_Region_West_relief_location_map.jpg" title="File:USA Region West relief location map.jpg">class=notpageimage| </a></div>General location of the Intermountain West in the <a href="/wiki/Western_United_States" title="Western United States">Western United States</a></div></div></div> <p>The <b>Intermountain West</b>, or <b>Intermountain Region</b>, is a <a href="/wiki/Physical_geography" title="Physical geography">geographic</a> and geological region of the <a href="/wiki/Western_United_States" title="Western United States">Western United States</a>. It is located between the <a href="/wiki/Rocky_Mountain_Front" title="Rocky Mountain Front">Rocky Mountain Front</a> on the east and the <a href="/wiki/Cascade_Range" title="Cascade Range">Cascade Range</a> and <a href="/wiki/Sierra_Nevada_(U.S.)" class="mw-redirect" title="Sierra Nevada (U.S.)">Sierra Nevada</a> on the west. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Topography">Topography</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Intermountain_West&action=edit&section=1" title="Edit section: Topography"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The Intermountain West has a <a href="/wiki/Basin_and_range" class="mw-redirect" title="Basin and range">basin and range</a> and <a href="/wiki/Plateau" title="Plateau">plateau</a> topography. Some of the region's <a href="/wiki/River" title="River">rivers</a> reach the <a href="/wiki/Pacific_Ocean" title="Pacific Ocean">Pacific Ocean</a>, such as the <a href="/wiki/Columbia_River" title="Columbia River">Columbia River</a> and <a href="/wiki/Colorado_River" title="Colorado River">Colorado River</a>. Other regional rivers and <a href="/wiki/Streams" class="mw-redirect" title="Streams">streams</a> are in <a href="/wiki/Endorheic_basin" title="Endorheic basin">endorheic basins</a> and cannot reach the sea, such as the <a href="/wiki/Walker_River" title="Walker River">Walker River</a> and <a href="/wiki/Owens_River" title="Owens River">Owens River</a>. These flow into <a href="/wiki/Brackish_water" title="Brackish water">brackish</a> or seasonally <a href="/wiki/Dry_lake" title="Dry lake">dry lakes</a> or desert <a href="/wiki/Sink_(geography)" class="mw-redirect" title="Sink (geography)">sinks</a>.<br /> Portions of this region include: </p> <ul><li><a href="/wiki/Basin_and_Range_Province" title="Basin and Range Province">Basin and Range Province</a></li> <li><a href="/wiki/Colorado_Plateau" title="Colorado Plateau">Colorado Plateau</a></li> <li><a href="/wiki/Great_Basin" title="Great Basin">Great Basin</a></li> <li><a href="/wiki/Intermontane_Plateaus" title="Intermontane Plateaus">Intermontane Plateaus</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Climate">Climate</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Intermountain_West&action=edit&section=2" title="Edit section: Climate"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <a href="/wiki/Climate" title="Climate">climate</a> of the Intermountain Region is affected by location and elevation. The sub-regions are in <a href="/wiki/Rain_shadow" title="Rain shadow">rain shadows</a> from the Cascade or Sierra Nevada ranges that block <a href="/wiki/Precipitation_(meteorology)" class="mw-redirect" title="Precipitation (meteorology)">precipitation</a> from Pacific storms. The <a href="/wiki/Winter" title="Winter">winter</a> weather depends on <a href="/wiki/Latitude" title="Latitude">latitude</a>. In the southern portion, winters are shorter, warmer and have less winter precipitation and snow. In the northern portion, winters are cold and moist. All areas have hot summers. <a href="/wiki/North_American_Monsoon" class="mw-redirect" title="North American Monsoon">North American Monsoon</a> storms can occur in the region during the mid-summer, coming northeast from the <a href="/wiki/Pacific_Ocean" title="Pacific Ocean">Pacific Ocean</a> and <a href="/wiki/Mexican_Plateau" title="Mexican Plateau">Mexican Plateau</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Natural_history">Natural history</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Intermountain_West&action=edit&section=3" title="Edit section: Natural history"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <a href="/wiki/Flora" title="Flora">flora</a> at lower elevations includes <a href="/wiki/Deserts_and_xeric_shrublands" title="Deserts and xeric shrublands">deserts and xeric shrublands</a> and <a href="/wiki/Temperate_grasslands,_savannas,_and_shrublands" title="Temperate grasslands, savannas, and shrublands">temperate grasslands and shrublands</a> <a href="/wiki/Biome" title="Biome">biome</a> vegetation. Higher elevation <a href="/wiki/Montane" class="mw-redirect" title="Montane">montane</a> <a href="/wiki/Habitat" title="Habitat">habitats</a> include <a href="/wiki/Temperate_coniferous_forest" title="Temperate coniferous forest">temperate coniferous forests</a> biome vegetation, including groves and <a href="/wiki/Forest" title="Forest">forests</a> of various species of <a href="/wiki/Pinus" class="mw-redirect" title="Pinus">pine</a>, <a href="/wiki/Cedrus" title="Cedrus">cedar</a>, <a href="/wiki/Juniperus" class="mw-redirect" title="Juniperus">juniper</a>, <a href="/wiki/Aspen" title="Aspen">aspen</a>, and other trees, and understory <a href="/wiki/Shrub" title="Shrub">shrubs</a>, and <a href="/wiki/Perennial" title="Perennial">perennials</a>.<br /> Intermountain West <a href="/wiki/Ecoregion" title="Ecoregion">ecoregions</a> include: </p> <ul><li><a href="/wiki/Cascade_Mountains_leeward_forests" title="Cascade Mountains leeward forests">Cascade Mountains leeward forests</a> - <i>Temperate coniferous forest biome (WWF)</i></li> <li><a href="/wiki/Eastern_Cascades_Slopes_and_Foothills_(ecoregion)" class="mw-redirect" title="Eastern Cascades Slopes and Foothills (ecoregion)">Eastern Cascades Slopes and Foothills (ecoregion)</a> – <i>Northwestern Forested Mountains; Level III ecoregion (EPA)</i></li> <li><a href="/wiki/Columbia_Plateau_(ecoregion)" title="Columbia Plateau (ecoregion)">Columbia Plateau (ecoregion)</a> – <i>Temperate grasslands, savannas, and shrublands biome (WWF)</i></li> <li><a href="/wiki/Palouse#Environment" title="Palouse">Palouse grasslands ecoregion</a> – <i>Temperate grasslands, savannas, and shrublands biome (WWF)</i></li> <li><a href="/wiki/North_Central_Rockies_forests" title="North Central Rockies forests">North Central Rockies forests</a> - <i>Temperate coniferous forest biome (WWF)</i></li> <li><a href="/wiki/South_Central_Rockies_forests" title="South Central Rockies forests">South Central Rockies forests</a> - <i>Temperate coniferous forest biome (WWF)</i></li> <li><a href="/wiki/Snake_River_Plain_(ecoregion)" title="Snake River Plain (ecoregion)">Snake River Plain (ecoregion)</a> – <i>North American Deserts; Level III ecoregion (EPA)</i></li> <li><a href="/wiki/Montana_Valley_and_Foothill_grasslands" class="mw-redirect" title="Montana Valley and Foothill grasslands">Montana Valley and Foothill grasslands</a> - <i>Temperate grasslands, savannas, and shrublands biome (WWF)</i></li> <li><a href="/wiki/Wyoming_Basin_shrub_steppe" title="Wyoming Basin shrub steppe">Wyoming Basin shrub steppe</a> - <i>Deserts and xeric shrublands biome (WWF)</i></li> <li><a href="/wiki/Central_Basin_and_Range_ecoregion" class="mw-redirect" title="Central Basin and Range ecoregion">Central Basin and Range ecoregion</a> – <i>North American Deserts; Level III ecoregion (EPA)</i></li> <li><a href="/wiki/Great_Basin_shrub_steppe" class="mw-redirect" title="Great Basin shrub steppe">Great Basin shrub steppe</a> – <i>Deserts and xeric shrublands biome (WWF)</i></li> <li><a href="/wiki/Great_Basin_montane_forests" title="Great Basin montane forests">Great Basin montane forests</a> – <i>Temperate coniferous forest biome (WWF)</i></li> <li><a href="/wiki/Northern_Basin_and_Range_ecoregion" title="Northern Basin and Range ecoregion">Northern Basin and Range ecoregion</a> – <i>North American Deserts; Level III ecoregion (EPA)</i></li> <li><a href="/wiki/Wasatch_and_Uinta_montane_forests" title="Wasatch and Uinta montane forests">Wasatch and Uinta montane forests ecoregion</a> – <i>Temperate coniferous forest biome (WWF)</i></li> <li><a href="/wiki/Colorado_Rockies_forests" title="Colorado Rockies forests">Colorado Rockies forests</a> - <i>Temperate coniferous forest biome (WWF)</i></li> <li><a href="/wiki/Colorado_Plateau_Shrublands" class="mw-redirect" title="Colorado Plateau Shrublands">Colorado Plateau Shrublands</a> - <i>Deserts and xeric shrublands biome (WWF)</i></li> <li><a href="/wiki/Arizona_Mountains_forests" title="Arizona Mountains forests">Arizona Mountains forests</a> - <i>Temperate coniferous forest biome (WWF)</i></li></ul> <p>Some sections are agriculturally cultivated with water diversions for <a href="/wiki/Irrigation_systems" class="mw-redirect" title="Irrigation systems">irrigation systems</a>. <a href="/wiki/Cattle_ranching" class="mw-redirect" title="Cattle ranching">Cattle ranching</a> is practiced in the region as well. Cultivated <a href="/wiki/Crops" class="mw-redirect" title="Crops">crops</a> include <a href="/wiki/Maize" title="Maize">corn</a>, <a href="/wiki/Potatoes" class="mw-redirect" title="Potatoes">potatoes</a>, <a href="/wiki/Sugar_beets" class="mw-redirect" title="Sugar beets">sugar beets</a>, <a href="/wiki/Grass_hay" class="mw-redirect" title="Grass hay">grass hay</a>, and <a href="/wiki/Alfalfa" title="Alfalfa">alfalfa</a>, the latter two crops are used for livestock feed. </p> <div class="mw-heading mw-heading2"><h2 id="Demographics_and_sociology">Demographics and sociology</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Intermountain_West&action=edit&section=4" title="Edit section: Demographics and sociology"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>For thousands of years the Intermountain West has been the homeland for many <a href="/wiki/Native_Americans_of_the_United_States" class="mw-redirect" title="Native Americans of the United States">Native American</a> cultures, tribes, and bands. The 18th-century <a href="/wiki/North_American_fur_trade" title="North American fur trade">fur trade</a> (northern areas), and 19th-century <a href="/wiki/American_westward_movement" class="mw-redirect" title="American westward movement">westward expansion of the United States</a> brought irreversible cultural changes. The completion of the <a href="/wiki/First_transcontinental_railroad" title="First transcontinental railroad">First transcontinental railroad</a> through the region accelerated non-native settlements and development. </p><p>Historically, the Intermountain West area centered in Utah is associated with <a href="/wiki/Latter-day_Saint" class="mw-redirect" title="Latter-day Saint">Latter-day Saint</a> (Mormon) settlements, and the region has the highest percentage of LDS members in the United States currently.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> That region is also known as the <a href="/wiki/Mormon_Corridor" class="mw-redirect" title="Mormon Corridor">Mormon Corridor</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Intermountain_states">Intermountain states</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Intermountain_West&action=edit&section=5" title="Edit section: Intermountain states"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <b>intermountain states</b> are generally considered to be <a href="/wiki/Nevada" title="Nevada">Nevada</a>, <a href="/wiki/Utah" title="Utah">Utah</a>, <a href="/wiki/Idaho" title="Idaho">Idaho</a>, the western third of <a href="/wiki/Montana" title="Montana">Montana</a>, <a href="/wiki/Arizona" title="Arizona">Arizona</a> north of the <a href="/wiki/Mogollon_Rim" title="Mogollon Rim">Mogollon Rim</a>, <a href="/wiki/Colorado" title="Colorado">Colorado</a> from the <a href="/wiki/Front_Range" title="Front Range">Front Range</a> westward, <a href="/wiki/New_Mexico" title="New Mexico">New Mexico</a> from the central mountain chain westward, <a href="/wiki/California" title="California">California</a> east of the Sierra Nevada and Cascade ranges, and <a href="/wiki/Far_West_Texas" class="mw-redirect" title="Far West Texas">Far West Texas</a> from the <a href="/wiki/Pecos_River" title="Pecos River">Pecos River</a> westward.<sup id="cite_ref-The_Intermountain_West_2-0" class="reference"><a href="#cite_note-The_Intermountain_West-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> The intermountain states are so named from having all or portions between the Rockies, Sierras, and Cascades. The intermountain states are included among states classified as the <a href="/wiki/Mountain_States" class="mw-redirect" title="Mountain States">Mountain States</a>. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Intermountain_West&action=edit&section=6" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239009302">.mw-parser-output .portalbox{padding:0;margin:0.5em 0;display:table;box-sizing:border-box;max-width:175px;list-style:none}.mw-parser-output .portalborder{border:1px solid var(--border-color-base,#a2a9b1);padding:0.1em;background:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output .portalbox-entry{display:table-row;font-size:85%;line-height:110%;height:1.9em;font-style:italic;font-weight:bold}.mw-parser-output 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title="Western United States">Western United States</a></li> <li><a href="/wiki/Category:Regions_of_the_Western_United_States" title="Category:Regions of the Western United States">Index: Regions of the Western United States</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Intermountain_West&action=edit&section=7" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output 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.id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFKilpinen" class="citation web cs1">Kilpinen, Jon T. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060110171322/http://www.valpo.edu/geomet/pics/geo200/religion/mormon.gif">"Latter-Day Saints as a Percentage of all Residence, 2000"</a>. <i>American Ethnic Geography</i>. <a href="/wiki/Valparaiso_University" title="Valparaiso University">Valparaiso University</a>. Archived from <a rel="nofollow" class="external text" href="http://www.valpo.edu/geomet/pics/geo200/religion/mormon.gif">the original</a> on 2006-01-10.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=American+Ethnic+Geography&rft.atitle=Latter-Day+Saints+as+a+Percentage+of+all+Residence%2C+2000&rft.aulast=Kilpinen&rft.aufirst=Jon+T&rft_id=http%3A%2F%2Fwww.valpo.edu%2Fgeomet%2Fpics%2Fgeo200%2Freligion%2Fmormon.gif&rfr_id=info%3Asid%2Fen.wikipedia.org%3AIntermountain+West" class="Z3988"></span></span> </li> <li id="cite_note-The_Intermountain_West-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-The_Intermountain_West_2-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBlake2002" class="citation book cs1">Blake, Reed (2002). <i>The Intermountain West: A Story of Place and People</i>. Pearson Custom Publishing. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-536-66915-5" title="Special:BookSources/0-536-66915-5"><bdi>0-536-66915-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Intermountain+West%3A+A+Story+of+Place+and+People&rft.pub=Pearson+Custom+Publishing&rft.date=2002&rft.isbn=0-536-66915-5&rft.aulast=Blake&rft.aufirst=Reed&rfr_id=info%3Asid%2Fen.wikipedia.org%3AIntermountain+West" class="Z3988"></span></span> </li> </ol></div></div> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output 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ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Regions_of_the_United_States" title="Template:Regions of the United States"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Regions_of_the_United_States" title="Template talk:Regions of the United States"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Regions_of_the_United_States" title="Special:EditPage/Template:Regions of the United States"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Regions_of_the_United_States" style="font-size:114%;margin:0 4em"><a href="/wiki/List_of_regions_of_the_United_States" title="List of regions of the United States">Regions of the United States</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Administrative</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:6.5em;font-weight:normal;">Units</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/U.S._state" title="U.S. state">U.S. state</a></li> <li><a href="/wiki/Washington,_D.C." title="Washington, D.C.">District of Columbia</a></li> <li><a href="/wiki/Territories_of_the_United_States" title="Territories of the United States">Territory</a> <ul><li><a href="/wiki/Insular_area" title="Insular area">Insular area</a></li> <li><a href="/wiki/United_States_Minor_Outlying_Islands" title="United States Minor Outlying Islands">Minor Outlying Island</a></li></ul></li> <li><a href="/wiki/Tribal_sovereignty_in_the_United_States" title="Tribal sovereignty in the United States">Tribal domestic dependent nations</a></li> <li><a href="/wiki/U.S._territorial_sovereignty#Maritime_territory_of_the_United_States" title="U.S. territorial sovereignty">Maritime territory</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6.5em;font-weight:normal;"><a href="/wiki/Time_in_the_United_States" title="Time in the United States">Time zones</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chamorro_Time_Zone" title="Chamorro Time Zone">Chamorro</a></li> <li><a href="/wiki/Samoa_Time_Zone" title="Samoa Time Zone">Samoa</a></li> <li><a href="/wiki/Hawaii%E2%80%93Aleutian_Time_Zone" title="Hawaii–Aleutian Time Zone">Hawaii–Aleutian</a></li> <li><a href="/wiki/Alaska_Time_Zone" title="Alaska Time Zone">Alaska</a></li> <li><a href="/wiki/Pacific_Time_Zone" title="Pacific Time Zone">Pacific</a></li> <li><a href="/wiki/Mountain_Time_Zone" title="Mountain Time Zone">Mountain</a></li> <li><a href="/wiki/Central_Time_Zone" title="Central Time Zone">Central</a></li> <li><a href="/wiki/Eastern_Time_Zone" title="Eastern Time Zone">Eastern</a></li> <li><a href="/wiki/Atlantic_Time_Zone" title="Atlantic Time Zone">Atlantic</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6.5em;font-weight:normal;"><a href="/wiki/United_States_Census_Bureau" title="United States Census Bureau">Census</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Western_United_States" title="Western United States">West</a> <ul><li><a href="/wiki/Pacific_states" class="mw-redirect" title="Pacific states">Pacific</a></li> <li><a href="/wiki/Mountain_states" title="Mountain states">Mountain</a></li></ul></li> <li><a href="/wiki/Midwestern_United_States" title="Midwestern United States">Midwest</a> <ul><li><a href="/wiki/East_North_Central_states" title="East North Central states">E N Central</a></li> <li><a href="/wiki/West_North_Central_states" title="West North Central states">W N Central</a></li></ul></li> <li><a href="/wiki/Northeastern_United_States" title="Northeastern United States">Northeast</a> <ul><li><a href="/wiki/New_England" title="New England">New England</a></li> <li><a href="/wiki/Mid-Atlantic_(United_States)" title="Mid-Atlantic (United States)">Middle Atlantic</a></li></ul></li> <li><a href="/wiki/Southern_United_States" title="Southern United States">South</a> <ul><li><a href="/wiki/South_Atlantic_states" title="South Atlantic states">S Atlantic</a></li> <li><a href="/wiki/East_South_Central_states" title="East South Central states">E S Central</a></li> <li><a href="/wiki/West_South_Central_states" title="West South Central states">W S Central</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6.5em;font-weight:normal;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/United_States_courts_of_appeals" title="United States courts of appeals">Courts of<br />appeals</a></div></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/United_States_Court_of_Appeals_for_the_First_Circuit" title="United States Court of Appeals for the First Circuit">1st</a></li> <li><a href="/wiki/United_States_Court_of_Appeals_for_the_Second_Circuit" title="United States Court of Appeals for the Second Circuit">2nd</a></li> <li><a href="/wiki/United_States_Court_of_Appeals_for_the_Third_Circuit" title="United States Court of Appeals for the Third Circuit">3rd</a></li> <li><a href="/wiki/United_States_Court_of_Appeals_for_the_Fourth_Circuit" title="United States Court of Appeals for the Fourth Circuit">4th</a></li> <li><a href="/wiki/United_States_Court_of_Appeals_for_the_Fifth_Circuit" title="United States Court of Appeals for the Fifth Circuit">5th</a></li> <li><a href="/wiki/United_States_Court_of_Appeals_for_the_Sixth_Circuit" title="United States Court of Appeals for the Sixth Circuit">6th</a></li> <li><a href="/wiki/United_States_Court_of_Appeals_for_the_Seventh_Circuit" title="United States Court of Appeals for the Seventh Circuit">7th</a></li> <li><a href="/wiki/United_States_Court_of_Appeals_for_the_Eighth_Circuit" title="United States Court of Appeals for the Eighth Circuit">8th</a></li> <li><a href="/wiki/United_States_Court_of_Appeals_for_the_Ninth_Circuit" title="United States Court of Appeals for the Ninth Circuit">9th</a></li> <li><a href="/wiki/United_States_Court_of_Appeals_for_the_Tenth_Circuit" title="United States Court of Appeals for the Tenth Circuit">10th</a></li> <li><a href="/wiki/United_States_Court_of_Appeals_for_the_Eleventh_Circuit" title="United States Court of Appeals for the Eleventh Circuit">11th</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Geography_of_the_United_States" title="Geography of the United States">Physical</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:6.5em;font-weight:normal;"><a href="/wiki/Physiographic_regions_of_the_United_States" title="Physiographic regions of the United States">Physiographic</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pacific_Coast_Ranges" title="Pacific Coast Ranges">Pacific Mountain</a></li> <li><a href="/wiki/Intermontane_Plateaus" title="Intermontane Plateaus">Intermontane Plateaus</a></li> <li><a href="/wiki/Rocky_Mountains" title="Rocky Mountains">Rocky Mountains</a></li> <li><a href="/wiki/Laurentian_Upland" title="Laurentian Upland">Laurentian Upland</a></li> <li><a href="/wiki/Interior_Plains" title="Interior Plains">Interior Plains</a></li> <li><a href="/wiki/U.S._Interior_Highlands" title="U.S. Interior Highlands">Interior Highlands</a></li> <li><a href="/wiki/Appalachian_Highlands" title="Appalachian Highlands">Appalachian Highlands</a></li> <li><a href="/wiki/Atlantic_Plain" title="Atlantic Plain">Atlantic Plain</a> <ul><li><a href="/wiki/Tidewater_(region)" title="Tidewater (region)">Tidewater</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6.5em;font-weight:normal;"><a href="/wiki/List_of_U.S._states_and_territories_by_coastline" title="List of U.S. states and territories by coastline">Coastal</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Arctic" title="Arctic">Arctic</a></li> <li><a href="/wiki/West_Coast_of_the_United_States" title="West Coast of the United States">West</a></li> <li><a href="/wiki/Great_Lakes_region" title="Great Lakes region">Great Lakes</a></li> <li><a href="/wiki/Gulf_Coast_of_the_United_States" title="Gulf Coast of the United States">Gulf</a></li> <li><a href="/wiki/East_Coast_of_the_United_States" title="East Coast of the United States">East</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Historical_regions_of_the_United_States" title="Historical regions of the United States">Historical</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:6.5em;font-weight:normal;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Territorial_evolution_of_the_United_States" title="Territorial evolution of the United States">Acquisitions</a></div></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Thirteen_Colonies" title="Thirteen Colonies">Thirteen Colonies</a></li> <li><a href="/wiki/Northwest_Territory" title="Northwest Territory">Northwest Territory</a></li> <li><a href="/wiki/Southwest_Territory" title="Southwest Territory">Southwest Territory</a></li> <li><a href="/wiki/Louisiana_Purchase" title="Louisiana Purchase">Louisiana Purchase</a></li> <li><a href="/wiki/Gadsden_Purchase" title="Gadsden Purchase">Gadsden Purchase</a></li> <li><a href="/wiki/Treaty_of_1818" title="Treaty of 1818">Treaty of 1818</a></li> <li><a href="/wiki/Adams%E2%80%93On%C3%ADs_Treaty" title="Adams–Onís Treaty">Adams–Onís Treaty</a></li> <li><a href="/wiki/Texas_annexation" title="Texas annexation">Texas annexation</a></li> <li><a href="/wiki/Oregon_Treaty" title="Oregon Treaty">Oregon Treaty</a></li> <li><a href="/wiki/Mexican_Cession" title="Mexican Cession">Mexican Cession</a></li> <li><a href="/wiki/Alaska_Purchase" title="Alaska Purchase">Alaska Purchase</a></li> <li><a href="/wiki/Newlands_Resolution" title="Newlands Resolution">Newlands Resolution</a></li> <li><a href="/wiki/Treaty_of_Paris_(1898)" title="Treaty of Paris (1898)">Acquisition of Puerto Rico and Guam</a></li> <li><a href="/wiki/Treaty_of_Cession_of_Tutuila" title="Treaty of Cession of Tutuila">Cession of Tutuila</a></li> <li><a href="/wiki/Treaty_of_Cession_of_Manu%27a" title="Treaty of Cession of Manu'a">Cession of Manu'a</a></li> <li><a href="/wiki/Oklahoma_Enabling_Act" title="Oklahoma Enabling Act">Annexation of the Indian Territory</a></li> <li><a href="/wiki/Treaty_of_the_Danish_West_Indies" title="Treaty of the Danish West Indies">Treaty of the Danish West Indies</a></li> <li><a href="/wiki/Northern_Mariana_Islands#United_Nations_trusteeship" title="Northern Mariana Islands">Acquisition of the Northern Mariana Islands</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:6.5em;font-weight:normal;"><a href="/wiki/American_Civil_War" title="American Civil War">Civil War</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Union_(American_Civil_War)" title="Union (American Civil War)">Union</a> <ul><li><a href="/wiki/Border_states_(American_Civil_War)" title="Border states (American Civil War)">Border states</a></li></ul></li> <li><a href="/wiki/Confederate_States_of_America" title="Confederate States of America">Confederacy</a> <ul><li><a href="/wiki/Old_South" title="Old South">Old South</a></li> <li><a href="/wiki/Dixie" title="Dixie">Dixie</a></li></ul></li> <li><a href="/wiki/Slave_states_and_free_states" title="Slave states and free states">Slave states and free states</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Divided</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Atlantic_Northeast" title="Atlantic Northeast">Atlantic Northeast</a></li> <li><a href="/wiki/The_Californias" title="The Californias">The Californias</a></li> <li><a href="/wiki/Columbia_District" title="Columbia District">Columbia District</a></li> <li><a href="/wiki/Oregon_Country" title="Oregon Country">Oregon Country</a></li> <li><a href="/wiki/Pacific_Northwest" title="Pacific Northwest">Pacific Northwest</a></li> <li><a href="/wiki/Prairie_Pothole_Region" title="Prairie Pothole Region">Prairie Pothole</a></li> <li><a href="/wiki/Samoan_Islands" title="Samoan Islands">Samoan Islands</a></li> <li><a href="/wiki/Sonoran_Desert" title="Sonoran Desert">Sonoran Desert</a></li> <li><a href="/wiki/Virgin_Islands" title="Virgin Islands">Virgin Islands</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Appalachia" title="Appalachia">Appalachia</a></li> <li><a href="/wiki/Central_United_States" title="Central United States">Central</a></li> <li><a href="/wiki/Eastern_United_States" title="Eastern United States">Eastern</a></li> <li><a href="/wiki/Four_Corners" title="Four Corners">Four Corners</a></li> <li><a href="/wiki/Great_Plains" title="Great Plains">Great Plains</a></li> <li><a href="/wiki/High_Plains_(United_States)" title="High Plains (United States)">High Plains</a></li> <li><a href="/wiki/Intermountain_states" class="mw-redirect" title="Intermountain states">Intermountain</a></li> <li><a href="/wiki/International_border_states_of_the_United_States" title="International border states of the United States">International border states</a></li> <li><a href="/wiki/Mariana_Islands" title="Mariana Islands">Mariana Islands</a></li> <li><a href="/wiki/Northern_United_States" title="Northern United States">Northern</a></li> <li><a href="/wiki/Northwestern_United_States" title="Northwestern United States">Northwestern</a> <ul><li><a href="/wiki/Cascadia_(bioregion)" title="Cascadia (bioregion)">Cascadia</a></li></ul></li> <li><a href="/wiki/Red_states_and_blue_states" title="Red states and blue states">Red states and blue states</a></li> <li><a href="/wiki/Southeastern_United_States" title="Southeastern United States">Southeastern</a></li> <li><a href="/wiki/Southern_United_States" title="Southern United States">Southern</a> <ul><li><a href="/wiki/Deep_South" title="Deep South">Deep</a></li> <li><a href="/wiki/Mid-South_(region)" title="Mid-South (region)">Mid</a></li> <li><a href="/wiki/New_South" title="New South">New</a></li> <li><a href="/wiki/Solid_South" title="Solid South">Solid</a></li> <li><a href="/wiki/Upland_South" title="Upland South">Upland</a></li></ul></li> <li><a href="/wiki/Southwestern_United_States" title="Southwestern United States">Southwestern</a></li> <li><a href="/wiki/Upper_Midwest" title="Upper Midwest">Upper Midwest</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="font-weight:bold;"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="List-Class article"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/16px-Symbol_list_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/23px-Symbol_list_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/31px-Symbol_list_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/List_of_regions_of_the_United_States" title="List of regions of the United States">List</a></li> <li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Regions_of_the_United_States" title="Category:Regions of the United States">Category</a></li> <li><span class="noviewer" typeof="mw:File"><span title="Commons page"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span> <a href="https://commons.wikimedia.org/wiki/Category:Regions_of_the_United_States" class="extiw" title="commons:Category:Regions of the United States">Commons</a></li></ul> </div></td></tr></tbody></table></div> <p><span class="geo-inline-hidden noexcerpt"><style data-mw-deduplicate="TemplateStyles:r1156832818">.mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-parser-output .geo-inline-hidden{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}</style><span class="plainlinks nourlexpansion"><a class="external text" href="https://geohack.toolforge.org/geohack.php?pagename=Intermountain_West&params=40_N_115_W_type:adm1st_region:US_scale:5000000"><span class="geo-default"><span class="geo-dms" title="Maps, aerial photos, and other data for this location"><span class="latitude">40°N</span> <span class="longitude">115°W</span></span></span><span class="geo-multi-punct"> / </span><span class="geo-nondefault"><span class="geo-dec" title="Maps, aerial photos, and other data for this location">40°N 115°W</span><span style="display:none"> / <span class="geo">40; -115</span></span></span></a></span></span> </p>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Intermountain_West&oldid=1244548426">https://en.wikipedia.org/w/index.php?title=Intermountain_West&oldid=1244548426</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" 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