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<div class="vector-body-before-content"> <div class="mw-indicators"> </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">Counties on the New York-Pennsylvania border</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 citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/Twin_Tiers" title="Special:EditPage/Twin Tiers">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. 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=%22Twin+Tiers%22">"Twin Tiers"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Twin+Tiers%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Twin+Tiers%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=%22Twin+Tiers%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Twin+Tiers%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Twin+Tiers%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">August 2017</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> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Twintiers.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/5/5c/Twintiers.png" decoding="async" width="423" height="328" class="mw-file-element" data-file-width="423" data-file-height="328" /></a><figcaption>This map indicates the area known as the Twin Tiers. Counties in <b>dark green</b> are almost always considered part of the <a href="/wiki/Southern_Tier" title="Southern Tier">Southern Tier</a>. Counties in <b>dark red</b> indicate the <a href="/wiki/Northern_Tier_(Pennsylvania)" title="Northern Tier (Pennsylvania)">Northern Tier</a>. Counties in <b>blue</b> are those in Pennsylvania that use the name "Northern Pennsylvania," and counties in <b>light green</b> are those that sometimes consider themselves Southern Tier counties. The <b>light blue</b> areas are associated with the Twin Tiers but are not part of the region proper.</figcaption></figure> <p>The <b>Twin Tiers</b> are the collective counties that lie on the <a href="/wiki/New_York%E2%80%93Pennsylvania_border" title="New York–Pennsylvania border">New York–Pennsylvania border</a> on either side of the <a href="/wiki/42nd_parallel_north" title="42nd parallel north">42nd parallel north</a>. The region is predominantly rural and contains many small towns. </p><p>Separately, the two halves of the Twin Tiers region are known as the <a href="/wiki/Southern_Tier" title="Southern Tier">Southern Tier</a> region in the <a href="/wiki/New_York_(state)" title="New York (state)">state of New York</a> and the <a href="/wiki/Northern_Tier_(Pennsylvania)" title="Northern Tier (Pennsylvania)">Northern Tier</a> region in the <a href="/wiki/Pennsylvania" title="Pennsylvania">Commonwealth of Pennsylvania</a>. The "Northern" and "Southern" designations are relative to the states in which they are located, not relative to each other. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Constituent_counties">Constituent counties</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Twin_Tiers&action=edit&section=1" title="Edit section: Constituent counties"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The Twin Tiers region is usually defined as including these counties: </p> <table class="wikitable"> <tbody><tr> <th>Northern Tier </th> <th>Southern Tier </th></tr> <tr> <td valign="top"> <ul><li><a href="/wiki/Bradford_County,_Pennsylvania" title="Bradford County, Pennsylvania">Bradford County, Pennsylvania</a></li> <li><a href="/wiki/Sullivan_County,_Pennsylvania" title="Sullivan County, Pennsylvania">Sullivan County, Pennsylvania</a></li> <li><a href="/wiki/Tioga_County,_Pennsylvania" title="Tioga County, Pennsylvania">Tioga County, Pennsylvania</a></li> <li><a href="/wiki/Susquehanna_County,_Pennsylvania" title="Susquehanna County, Pennsylvania">Susquehanna County, Pennsylvania</a></li> <li><a href="/wiki/Wyoming_County,_Pennsylvania" title="Wyoming County, Pennsylvania">Wyoming County, Pennsylvania</a></li> <li><a href="/wiki/McKean_County,_Pennsylvania" title="McKean County, Pennsylvania">McKean County, Pennsylvania</a></li> <li><a href="/wiki/Potter_County,_Pennsylvania" title="Potter County, Pennsylvania">Potter County, Pennsylvania</a></li></ul> </td> <td valign="top"> <ul><li><a href="/wiki/Delaware_County,_New_York" title="Delaware County, New York">Delaware County, New York</a></li> <li><a href="/wiki/Broome_County,_New_York" title="Broome County, New York">Broome County, New York</a></li> <li><a href="/wiki/Tioga_County,_New_York" title="Tioga County, New York">Tioga County, New York</a></li> <li><a href="/wiki/Chemung_County,_New_York" title="Chemung County, New York">Chemung County, New York</a></li> <li><a href="/wiki/Steuben_County,_New_York" title="Steuben County, New York">Steuben County, New York</a></li> <li><a href="/wiki/Allegany_County,_New_York" title="Allegany County, New York">Allegany County, New York</a></li> <li><a href="/wiki/Cattaraugus_County,_New_York" title="Cattaraugus County, New York">Cattaraugus County, New York</a></li></ul> </td></tr></tbody></table> <p>McKean, Potter, and (less often) <a href="/wiki/Cameron_County,_Pennsylvania" title="Cameron County, Pennsylvania">Cameron</a> Counties refer to themselves as part of the Twin Tiers, but almost never consider themselves part of the Northern Tier, instead going by the name "Northern Pennsylvania". Significant ambiguity often exists in regions: for instance, the western part of the region (McKean and Potter Counties) often associate themselves with <a href="/wiki/St._Marys,_Pennsylvania" title="St. Marys, Pennsylvania">St. Marys</a>, a city larger than any city in that area, but in <a href="/wiki/Elk_County,_Pennsylvania" title="Elk County, Pennsylvania">Elk County</a>, just south of what is considered "Northern Tier" by any standard. This broader area is also known as the <a href="/wiki/Pennsylvania_Wilds" title="Pennsylvania Wilds">Pennsylvania Wilds</a>. </p><p><a href="/wiki/Erie_County,_Pennsylvania" title="Erie County, Pennsylvania">Erie County, Pennsylvania</a>, and <a href="/wiki/Warren_County,_Pennsylvania" title="Warren County, Pennsylvania">Warren County, Pennsylvania</a>, are almost never considered part of the Twin Tiers, though portions of Warren County are occasionally associated with the rest of the region. </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Twin_Tiers&action=edit&section=2" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The region was historically a disputed territory in the history of the United States prior to its founding. The Northern Tier was claimed by <a href="/wiki/Pennsylvania_Colony" class="mw-redirect" title="Pennsylvania Colony">Pennsylvania Colony</a> and <a href="/wiki/Connecticut_Colony" title="Connecticut Colony">Connecticut Colony</a>, while the Southern Tier was claimed by Pennsylvania, <a href="/wiki/Province_of_Massachusetts_Bay" title="Province of Massachusetts Bay">Province of Massachusetts Bay</a>, and <a href="/wiki/New_York_Colony" class="mw-redirect" title="New York Colony">New York Colony</a>. Various treaties and land sales eventually placed the Northern Tier in Pennsylvania's hands and the Southern Tier in New York's. </p><p>The region's name originated in 1968 as part of a marketing campaign in the <i><a href="/wiki/Elmira_Star-Gazette" class="mw-redirect" title="Elmira Star-Gazette">Elmira Star-Gazette</a></i> that used twins.<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> </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=Twin_Tiers&action=edit&section=3" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Erie_Triangle" title="Erie Triangle">Erie Triangle</a></li> <li><a href="/wiki/New_York-Pennsylvania_border" class="mw-redirect" title="New York-Pennsylvania border">New York-Pennsylvania border</a></li> <li><a href="/wiki/Penn-York_Valley" title="Penn-York Valley">Penn-York Valley</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=Twin_Tiers&action=edit&section=4" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .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="CITEREFKnaus2015" class="citation web cs1">Knaus, Don (February 11, 2015). <a rel="nofollow" class="external text" href="http://mountainhomemag.com/people-life/the-twin-tiers-twins/">"The Twin Tiers Twins"</a>. <i>Mountain Home Magazine</i>. Mountain Home Magazine<span class="reference-accessdate">. Retrieved <span class="nowrap">January 24,</span> 2017</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Mountain+Home+Magazine&rft.atitle=The+Twin+Tiers+Twins&rft.date=2015-02-11&rft.aulast=Knaus&rft.aufirst=Don&rft_id=http%3A%2F%2Fmountainhomemag.com%2Fpeople-life%2Fthe-twin-tiers-twins%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATwin+Tiers" class="Z3988"></span></span> </li> </ol></div> <p><span class="metadata coord-missing"></span> </p>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" 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=Twin_Tiers&oldid=1256327752">https://en.wikipedia.org/w/index.php?title=Twin_Tiers&oldid=1256327752</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Geography_of_New_York_(state)" title="Category:Geography of New York (state)">Geography of New York (state)</a></li><li><a href="/wiki/Category:Regions_of_Pennsylvania" title="Category:Regions of Pennsylvania">Regions of Pennsylvania</a></li><li><a href="/wiki/Category:Borders_of_New_York_(state)" title="Category:Borders of New York (state)">Borders of New York (state)</a></li><li><a href="/wiki/Category:Borders_of_Pennsylvania" title="Category:Borders of Pennsylvania">Borders of Pennsylvania</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_matches_Wikidata" title="Category:Short description matches Wikidata">Short description matches Wikidata</a></li><li><a href="/wiki/Category:Articles_needing_additional_references_from_August_2017" title="Category:Articles needing additional references from August 2017">Articles needing additional references from August 2017</a></li><li><a href="/wiki/Category:All_articles_needing_additional_references" title="Category:All articles needing additional references">All articles needing additional references</a></li><li><a href="/wiki/Category:New_York_(state)_articles_missing_geocoordinate_data" title="Category:New York (state) articles missing geocoordinate data">New York (state) articles missing geocoordinate data</a></li><li><a href="/wiki/Category:All_articles_needing_coordinates" title="Category:All articles needing coordinates">All articles needing coordinates</a></li><li><a href="/wiki/Category:Articles_missing_coordinates_without_coordinates_on_Wikidata" title="Category:Articles missing coordinates without coordinates on Wikidata">Articles missing coordinates without coordinates on Wikidata</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 9 November 2024, at 11:00<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. 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