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for this location"><span class="latitude">40°11′44″N</span> <span class="longitude">89°31′00″W</span></span></span><span class="geo-multi-punct"> / </span><span class="geo-default"><span class="geo-dec" title="Maps, aerial photos, and other data for this location">40.195659°N 89.516602°W</span><span style="display:none"> / <span class="geo">40.195659; -89.516602</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"><span class="mw-redirectedfrom">(Redirected from <a href="/w/index.php?title=Area_code_815&redirect=no" class="mw-redirect" title="Area code 815">Area code 815</a>)</span></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">Telephone area codes</div> <p class="mw-empty-elt"> </p> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Illinois_NPA_2021-12.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Illinois_NPA_2021-12.png/300px-Illinois_NPA_2021-12.png" decoding="async" width="300" height="509" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Illinois_NPA_2021-12.png/450px-Illinois_NPA_2021-12.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5d/Illinois_NPA_2021-12.png/600px-Illinois_NPA_2021-12.png 2x" data-file-width="616" data-file-height="1045" /></a><figcaption>All NPAs within Illinois</figcaption></figure> <p><b>Area codes 815 and 779</b> are telephone <a href="/wiki/Area_code" class="mw-redirect" title="Area code">area codes</a> in the <a href="/wiki/North_American_Numbering_Plan" title="North American Numbering Plan">North American Numbering Plan</a> (NANP) for most of <a href="/wiki/Northern_Illinois" title="Northern Illinois">northern Illinois</a> outside the <a href="/wiki/Quad_Cities" title="Quad Cities">Quad Cities</a> areas. It also serves the <a href="/wiki/Joliet,_Illinois" title="Joliet, Illinois">Joliet</a> area and some of Chicago’s western and northwestern suburbs. 815 was one of the four original Illinois area codes set up in 1947. Area code 779 was assigned to the same numbering plan area in 2009 to form an <a href="/wiki/Overlay_plan" class="mw-redirect" title="Overlay plan">overlay</a>. </p> <meta property="mw:PageProp/toc" /> <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=Area_codes_815_and_779&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>When the <a href="/wiki/AT%26T_Corporation" title="AT&T Corporation">American Telephone and Telegraph Company</a> (AT&T) created the first nationwide <a href="/wiki/Telephone_numbering_plan" title="Telephone numbering plan">telephone numbering plan</a> for <a href="/wiki/Operator_Toll_Dialing" title="Operator Toll Dialing">Operator Toll Dialing</a> in 1947, the state of Illinois was divided into four numbering plan areas (NPAs). They were generally laid out as a region in and around Chicago, a northern band outside Chicago, and two bands in the central and southern parts of the state. 815 was assigned to the northern band outside Chicago as one of the 86 <a href="/wiki/Original_North_American_area_codes" title="Original North American area codes">original North American area codes</a>. </p><p>After September 1956,<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> the 815 numbering plan area was divided roughly in half along a north-westerly to south-easterly running line. Area code 309 was created by merging the western part of 815, including the Illinois side of the Quad Cities, with the northern portion of <a href="/wiki/Area_code_217" class="mw-redirect" title="Area code 217">area code 217</a>. The new area code was one of the first area codes not serving an entire state, but having the digit <i>0</i> in the middle position of the code. It was the only new area code created in Illinois between 1947 and the 1989 creation of <a href="/wiki/Area_code_708" class="mw-redirect" title="Area code 708">area code 708</a>.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>In preparation of an <a href="/wiki/Overlay_plan" class="mw-redirect" title="Overlay plan">overlay plan</a> with the new area code 779, all calls from the 815 area <a href="/wiki/Ten-digit_dialing" title="Ten-digit dialing">needed to be dialed with an area code</a> beginning on February 17, 2007. A month later, area code 779 was activated. </p> <div class="mw-heading mw-heading2"><h2 id="Service_area">Service area</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Area_codes_815_and_779&action=edit&section=2" title="Edit section: Service area"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1184024115">.mw-parser-output .div-col{margin-top:0.3em;column-width:30em}.mw-parser-output .div-col-small{font-size:90%}.mw-parser-output .div-col-rules{column-rule:1px solid #aaa}.mw-parser-output .div-col dl,.mw-parser-output .div-col ol,.mw-parser-output .div-col ul{margin-top:0}.mw-parser-output .div-col li,.mw-parser-output .div-col dd{page-break-inside:avoid;break-inside:avoid-column}</style><div class="div-col" style="column-width: 9em;"> <ul><li><a href="/wiki/Adeline,_Illinois" title="Adeline, Illinois">Adeline</a></li> <li><a href="/wiki/Amboy,_Illinois" title="Amboy, Illinois">Amboy</a></li> <li><a href="/wiki/Andres,_Illinois" title="Andres, Illinois">Andres</a></li> <li><a href="/wiki/Apple_River,_Illinois" title="Apple River, Illinois">Apple River</a></li> <li><a href="/wiki/Argyle,_Illinois" title="Argyle, Illinois">Argyle</a></li> <li><a href="/wiki/Aroma_Park,_Illinois" title="Aroma Park, Illinois">Aroma Park</a></li> <li><a href="/wiki/Ashkum,_Illinois" title="Ashkum, Illinois">Ashkum</a></li> <li><a href="/wiki/Ashton,_Illinois" title="Ashton, Illinois">Ashton</a></li> <li><a href="/wiki/Baileyville,_Illinois" title="Baileyville, Illinois">Baileyville</a></li> <li><a href="/wiki/Ballou,_Illinois" title="Ballou, Illinois">Ballou</a></li> <li><a href="/wiki/Belvidere,_Illinois" title="Belvidere, Illinois">Belvidere</a></li> <li><a href="/wiki/Bonfield,_Illinois" title="Bonfield, Illinois">Bonfield</a></li> <li><a href="/wiki/Bourbonnais,_Illinois" title="Bourbonnais, Illinois">Bourbonnais</a></li> <li><a href="/wiki/Braceville,_Illinois" title="Braceville, Illinois">Braceville</a></li> <li><a href="/wiki/Bradley,_Illinois" title="Bradley, Illinois">Bradley</a></li> <li><a href="/wiki/Braidwood,_Illinois" title="Braidwood, Illinois">Braidwood</a></li> <li><a href="/wiki/Brush_Point,_Illinois" title="Brush Point, Illinois">Brush Point</a></li> <li><a href="/wiki/Buckingham,_Illinois" title="Buckingham, Illinois">Buckingham</a></li> <li><a href="/wiki/Buffalo_Grove,_Ogle_County,_Illinois" title="Buffalo Grove, Ogle County, Illinois">Buffalo Grove</a></li> <li><a href="/wiki/Bull_Valley,_Illinois" title="Bull Valley, Illinois">Bull Valley</a></li> <li><a href="/wiki/Byron,_Illinois" title="Byron, Illinois">Byron</a></li> <li><a href="/wiki/Caledonia,_Illinois" title="Caledonia, Illinois">Caledonia</a></li> <li><a href="/wiki/Capron,_Illinois" title="Capron, Illinois">Capron</a></li> <li><a href="/wiki/Carbon_Hill,_Illinois" title="Carbon Hill, Illinois">Carbon Hill</a></li> <li><a href="/wiki/Cedar_Point,_Illinois" title="Cedar Point, Illinois">Cedar Point</a></li> <li><a href="/wiki/Cedarville,_Illinois" title="Cedarville, Illinois">Cedarville</a></li> <li><a href="/wiki/Chadwick,_Illinois" title="Chadwick, Illinois">Chadwick</a></li> <li><a href="/wiki/Chana,_Illinois" title="Chana, Illinois">Chana</a></li> <li><a href="/wiki/Channahon,_Illinois" title="Channahon, Illinois">Channahon</a></li> <li><a href="/wiki/Cherry_Valley,_Illinois" title="Cherry Valley, Illinois">Cherry Valley</a></li> <li><a href="/wiki/Clifton,_Illinois" title="Clifton, Illinois">Clifton</a></li> <li><a href="/wiki/Coal_City,_Illinois" title="Coal City, Illinois">Coal City</a></li> <li><a href="/wiki/Coleta,_Illinois" title="Coleta, Illinois">Coleta</a></li> <li><a href="/wiki/Coltonville,_Illinois" title="Coltonville, Illinois">Coltonville</a></li> <li><a href="/wiki/Compton,_Illinois" title="Compton, Illinois">Compton</a></li> <li><a href="/wiki/Coral,_Illinois" title="Coral, Illinois">Coral</a></li> <li><a href="/wiki/Cortland,_Illinois" title="Cortland, Illinois">Cortland</a></li> <li><a href="/wiki/Crest_Hill,_Illinois" title="Crest Hill, Illinois">Crest Hill</a></li> <li><a href="/wiki/Creston,_Illinois" title="Creston, Illinois">Creston</a></li> <li><a href="/wiki/Crystal_Lake,_Illinois" title="Crystal Lake, Illinois">Crystal Lake</a></li> <li><a href="/wiki/Crystal_Lawns,_Illinois" title="Crystal Lawns, Illinois">Crystal Lawns</a></li> <li><a href="/wiki/Dakota,_Illinois" title="Dakota, Illinois">Dakota</a></li> <li><a href="/wiki/Dana,_Illinois" title="Dana, Illinois">Dana</a></li> <li><a href="/wiki/Danforth,_Illinois" title="Danforth, Illinois">Danforth</a></li> <li><a href="/wiki/Davis,_Illinois" title="Davis, Illinois">Davis</a></li> <li><a href="/wiki/Davis_Junction,_Illinois" title="Davis Junction, Illinois">Davis Junction</a></li> <li><a href="/wiki/Daysville,_Illinois" title="Daysville, Illinois">Daysville</a></li> <li><a href="/wiki/Deer_Grove,_Illinois" title="Deer Grove, Illinois">Deer Grove</a></li> <li><a href="/wiki/DeKalb,_Illinois" title="DeKalb, Illinois">DeKalb</a></li> <li><a href="/wiki/Diamond,_Illinois" title="Diamond, Illinois">Diamond</a></li> <li><a href="/wiki/Dixon,_Illinois" title="Dixon, Illinois">Dixon</a></li> <li><a href="/wiki/Durand,_Illinois" title="Durand, Illinois">Durand</a></li> <li><a href="/wiki/Dwight,_Illinois" title="Dwight, Illinois">Dwight</a></li> <li><a href="/wiki/Earlville,_Illinois" title="Earlville, Illinois">Earlville</a></li> <li><a href="/wiki/East_Brooklyn,_Illinois" title="East Brooklyn, Illinois">East Brooklyn</a></li> <li><a href="/wiki/East_Dubuque,_Illinois" title="East Dubuque, Illinois">East Dubuque</a></li> <li><a href="/wiki/Egan,_Illinois" title="Egan, Illinois">Egan</a></li> <li><a href="/wiki/Eleroy,_Illinois" title="Eleroy, Illinois">Eleroy</a></li> <li><a href="/wiki/Elizabeth,_Illinois" title="Elizabeth, Illinois">Elizabeth</a></li> <li><a href="/wiki/Elwood,_Illinois" title="Elwood, Illinois">Elwood</a></li> <li><a href="/wiki/Esmond,_Illinois" title="Esmond, Illinois">Esmond</a></li> <li><a href="/wiki/Essex,_Illinois" title="Essex, Illinois">Essex</a></li> <li><a href="/wiki/Fairdale,_Illinois" title="Fairdale, Illinois">Fairdale</a></li> <li><a href="/wiki/Fairmont,_Illinois" title="Fairmont, Illinois">Fairmont</a></li> <li><a href="/wiki/Flagg_Center,_Illinois" title="Flagg Center, Illinois">Flagg Center</a></li> <li><a href="/wiki/Forreston,_Illinois" title="Forreston, Illinois">Forreston</a></li> <li><a href="/wiki/Frankfort,_Illinois" title="Frankfort, Illinois">Frankfort</a></li> <li><a href="/wiki/Frankfort_Square,_Illinois" title="Frankfort Square, Illinois">Frankfort Square</a></li> <li><a href="/wiki/Franklin_Grove,_Illinois" title="Franklin Grove, Illinois">Franklin Grove</a></li> <li><a href="/wiki/Freeport,_Illinois" title="Freeport, Illinois">Freeport</a></li> <li><a href="/wiki/Fulton,_Illinois" title="Fulton, Illinois">Fulton</a></li> <li><a href="/wiki/Galena,_Illinois" title="Galena, Illinois">Galena</a></li> <li><a href="/wiki/Genoa,_Illinois" title="Genoa, Illinois">Genoa</a></li> <li><a href="/wiki/Garden_Prairie,_Illinois" title="Garden Prairie, Illinois">Garden Prairie</a></li> <li><a href="/wiki/Gardner,_Illinois" title="Gardner, Illinois">Gardner</a></li> <li><a href="/wiki/German_Valley,_Illinois" title="German Valley, Illinois">German Valley</a></li> <li><a href="/wiki/Gilman,_Illinois" title="Gilman, Illinois">Gilman</a></li> <li><a href="/wiki/Godley,_Illinois" title="Godley, Illinois">Godley</a></li> <li><a href="/wiki/Grand_Detour,_Illinois" title="Grand Detour, Illinois">Grand Detour</a></li> <li><a href="/wiki/Grand_Ridge,_Illinois" title="Grand Ridge, Illinois">Grand Ridge</a></li> <li><a href="/wiki/Grant_Park,_Illinois" title="Grant Park, Illinois">Grant Park</a></li> <li><a href="/wiki/Granville,_Illinois" title="Granville, Illinois">Granville</a></li> <li><a href="/wiki/Greenwood,_Illinois" title="Greenwood, Illinois">Greenwood</a></li> <li><a href="/wiki/Haldane,_Illinois" title="Haldane, Illinois">Haldane</a></li> <li><a href="/wiki/Hanover,_Illinois" title="Hanover, Illinois">Hanover</a></li> <li><a href="/wiki/Harmon,_Illinois" title="Harmon, Illinois">Harmon</a></li> <li><a href="/wiki/Harrison,_Winnebago_County,_Illinois" title="Harrison, Winnebago County, Illinois">Harrison</a></li> <li><a href="/wiki/Harvard,_Illinois" title="Harvard, Illinois">Harvard</a></li> <li><a href="/wiki/Hebron,_Illinois" title="Hebron, Illinois">Hebron</a></li> <li><a href="/wiki/Herscher,_Illinois" title="Herscher, Illinois">Herscher</a></li> <li><a href="/wiki/Holiday_Hills,_Illinois" title="Holiday Hills, Illinois">Holiday Hills</a></li> <li><a href="/wiki/Homer_Glen,_Illinois" title="Homer Glen, Illinois">Homer Glen</a></li> <li><a href="/wiki/Hillcrest,_Illinois" title="Hillcrest, Illinois">Hillcrest</a></li> <li><a href="/wiki/Hinckley,_Illinois" title="Hinckley, Illinois">Hinckley</a></li> <li><a href="/wiki/Hopkins_Park,_Illinois" title="Hopkins Park, Illinois">Hopkins Park</a></li> <li><a href="/wiki/Ingalls_Park,_Illinois" title="Ingalls Park, Illinois">Ingalls Park</a></li> <li><a href="/wiki/Irwin,_Illinois" title="Irwin, Illinois">Irwin</a></li> <li><a href="/wiki/Johnsburg,_Illinois" title="Johnsburg, Illinois">Johnsburg</a></li> <li><a href="/wiki/Joliet,_Illinois" title="Joliet, Illinois">Joliet</a></li> <li><a href="/wiki/Kangley,_Illinois" title="Kangley, Illinois">Kangley</a></li> <li><a href="/wiki/Kankakee,_Illinois" title="Kankakee, Illinois">Kankakee</a></li> <li><a href="/wiki/Kent,_Illinois" title="Kent, Illinois">Kent</a></li> <li><a href="/wiki/Kings,_Ogle_County,_Illinois" title="Kings, Ogle County, Illinois">Kings</a></li> <li><a href="/wiki/Kingston,_Illinois" title="Kingston, Illinois">Kingston</a></li> <li><a href="/wiki/Kinsman,_Illinois" title="Kinsman, Illinois">Kinsman</a></li> <li><a href="/wiki/Kirkland,_Illinois" title="Kirkland, Illinois">Kirkland</a></li> <li><a href="/wiki/Lake_Holiday,_Illinois" title="Lake Holiday, Illinois">Lake Holiday</a></li> <li><a href="/wiki/Lake_Summerset,_Illinois" title="Lake Summerset, Illinois">Lake Summerset</a></li> <li><a href="/wiki/Lakemoor,_Illinois" title="Lakemoor, Illinois">Lakemoor</a></li> <li><a href="/wiki/Lakewood,_Illinois" title="Lakewood, Illinois">Lakewood</a></li> <li><a href="/wiki/Lakewood_Shores,_Illinois" title="Lakewood Shores, Illinois">Lakewood Shores</a></li> <li><a href="/wiki/Lanark,_Illinois" title="Lanark, Illinois">Lanark</a></li> <li><a href="/wiki/LaSalle,_Illinois" title="LaSalle, Illinois">LaSalle</a></li> <li><a href="/wiki/Leaf_River,_Illinois" title="Leaf River, Illinois">Leaf River</a></li> <li><a href="/wiki/Lee,_Illinois" title="Lee, Illinois">Lee</a></li> <li><a href="/wiki/Leland,_Illinois" title="Leland, Illinois">Leland</a></li> <li><a href="/wiki/Lena,_Illinois" title="Lena, Illinois">Lena</a></li> <li><a href="/wiki/Leonore,_Illinois" title="Leonore, Illinois">Leonore</a></li> <li><a href="/wiki/Lindenwood,_Illinois" title="Lindenwood, Illinois">Lindenwood</a></li> <li><a href="/wiki/Lisbon,_Illinois" title="Lisbon, Illinois">Lisbon</a></li> <li><a href="/wiki/Lockport,_Illinois" title="Lockport, Illinois">Lockport</a></li> <li><a href="/wiki/Lostant,_Illinois" title="Lostant, Illinois">Lostant</a></li> <li><a href="/wiki/Loves_Park,_Illinois" title="Loves Park, Illinois">Loves Park</a></li> <li><a href="/wiki/Lyndon,_Illinois" title="Lyndon, Illinois">Lyndon</a></li> <li><a href="/wiki/Machesney_Park,_Illinois" title="Machesney Park, Illinois">Machesney Park</a></li> <li><a href="/wiki/Malta,_Illinois" title="Malta, Illinois">Malta</a></li> <li><a href="/wiki/Manhattan,_Illinois" title="Manhattan, Illinois">Manhattan</a></li> <li><a href="/wiki/Manteno,_Illinois" title="Manteno, Illinois">Manteno</a></li> <li><a href="/wiki/Maple_Park,_Illinois" title="Maple Park, Illinois">Maple Park</a></li> <li><a href="/wiki/Marengo,_Illinois" title="Marengo, Illinois">Marengo</a></li> <li><a href="/wiki/Marseilles,_Illinois" title="Marseilles, Illinois">Marseilles</a></li> <li><a href="/wiki/Mazon,_Illinois" title="Mazon, Illinois">Mazon</a></li> <li><a href="/wiki/McCullom_Lake,_Illinois" title="McCullom Lake, Illinois">McCullom Lake</a></li> <li><a href="/wiki/McHenry,_Illinois" title="McHenry, Illinois">McHenry</a></li> <li><a href="/wiki/Mendota,_Illinois" title="Mendota, Illinois">Mendota</a></li> <li><a href="/wiki/Menominee,_Illinois" title="Menominee, Illinois">Menominee</a></li> <li><a href="/wiki/Meriden,_Illinois" title="Meriden, Illinois">Meriden</a></li> <li><a href="/wiki/Millbrook,_Illinois" title="Millbrook, Illinois">Millbrook</a></li> <li><a href="/wiki/Milledgeville,_Illinois" title="Milledgeville, Illinois">Milledgeville</a></li> <li><a href="/wiki/Millington,_Illinois" title="Millington, Illinois">Millington</a></li> <li><a href="/wiki/Minooka,_Illinois" title="Minooka, Illinois">Minooka</a></li> <li><a href="/wiki/Mokena,_Illinois" title="Mokena, Illinois">Mokena</a></li> <li><a href="/wiki/Momence,_Illinois" title="Momence, Illinois">Momence</a></li> <li><a href="/wiki/Monee,_Illinois" title="Monee, Illinois">Monee</a></li> <li><a href="/wiki/Monroe_Center,_Illinois" title="Monroe Center, Illinois">Monroe Center</a></li> <li><a href="/wiki/Morris,_Illinois" title="Morris, Illinois">Morris</a></li> <li><a href="/wiki/Morrison,_Illinois" title="Morrison, Illinois">Morrison</a></li> <li><a href="/wiki/Mount_Carroll,_Illinois" title="Mount Carroll, Illinois">Mount Carroll</a></li> <li><a href="/wiki/Mount_Morris,_Illinois" title="Mount Morris, Illinois">Mount Morris</a></li> <li><a href="/wiki/Naplate,_Illinois" title="Naplate, Illinois">Naplate</a></li> <li><a href="/wiki/Nelson,_Illinois" title="Nelson, Illinois">Nelson</a></li> <li><a href="/wiki/New_Milford,_Illinois" title="New Milford, Illinois">New Milford</a></li> <li><a href="/wiki/New_Lenox,_Illinois" title="New Lenox, Illinois">New Lenox</a></li> <li><a href="/wiki/Newark,_Illinois" title="Newark, Illinois">Newark</a></li> <li><a href="/wiki/Nora,_Illinois" title="Nora, Illinois">Nora</a></li> <li><a href="/wiki/North_Utica,_Illinois" title="North Utica, Illinois">North Utica</a></li> <li><a href="/wiki/Norway,_Illinois" title="Norway, Illinois">Norway</a></li> <li><a href="/wiki/Odell,_Illinois" title="Odell, Illinois">Odell</a></li> <li><a href="/wiki/Oglesby,_Illinois" title="Oglesby, Illinois">Oglesby</a></li> <li><a href="/wiki/Onarga,_Illinois" title="Onarga, Illinois">Onarga</a></li> <li><a href="/wiki/Oneco,_Illinois" title="Oneco, Illinois">Oneco</a></li> <li><a href="/wiki/Orangeville,_Illinois" title="Orangeville, Illinois">Orangeville</a></li> <li><a href="/wiki/Oregon,_Illinois" title="Oregon, Illinois">Oregon</a></li> <li><a href="/wiki/Ottawa,_Illinois" title="Ottawa, Illinois">Ottawa</a></li> <li><a href="/wiki/Paw_Paw,_Illinois" title="Paw Paw, Illinois">Paw Paw</a></li> <li><a href="/wiki/Paynes_Point,_Illinois" title="Paynes Point, Illinois">Paynes Point</a></li> <li><a href="/wiki/Pearl_City,_Illinois" title="Pearl City, Illinois">Pearl City</a></li> <li><a href="/wiki/Pecatonica,_Illinois" title="Pecatonica, Illinois">Pecatonica</a></li> <li><a href="/wiki/Peotone,_Illinois" title="Peotone, Illinois">Peotone</a></li> <li><a href="/wiki/Peru,_Illinois" title="Peru, Illinois">Peru</a></li> <li><a href="/wiki/Plainfield,_Illinois" title="Plainfield, Illinois">Plainfield</a></li> <li><a href="/wiki/Polo,_Illinois" title="Polo, Illinois">Polo</a></li> <li><a href="/wiki/Pontiac,_Illinois" title="Pontiac, Illinois">Pontiac</a></li> <li><a href="/wiki/Poplar_Grove,_Illinois" title="Poplar Grove, Illinois">Poplar Grove</a></li> <li><a href="/wiki/Prairie_Grove,_Illinois" title="Prairie Grove, Illinois">Prairie Grove</a></li> <li><a href="/wiki/Preston_Heights,_Illinois" title="Preston Heights, Illinois">Preston Heights</a></li> <li><a href="/wiki/Princeton,_Illinois" title="Princeton, Illinois">Princeton</a></li> <li><a href="/wiki/Prophetstown,_Illinois" title="Prophetstown, Illinois">Prophetstown</a></li> <li><a href="/wiki/Ransom,_Illinois" title="Ransom, Illinois">Ransom</a></li> <li><a href="/wiki/Reddick,_Illinois" title="Reddick, Illinois">Reddick</a></li> <li><a href="/wiki/Richmond,_Illinois" title="Richmond, Illinois">Richmond</a></li> <li><a href="/wiki/Ridott,_Illinois" title="Ridott, Illinois">Ridott</a></li> <li><a href="/wiki/Ringwood,_Illinois" title="Ringwood, Illinois">Ringwood</a></li> <li><a href="/wiki/Ritchie,_Illinois" title="Ritchie, Illinois">Ritchie</a></li> <li><a href="/wiki/Rochelle,_Illinois" title="Rochelle, Illinois">Rochelle</a></li> <li><a href="/wiki/Rock_City,_Illinois" title="Rock City, Illinois">Rock City</a></li> <li><a href="/wiki/Rock_Falls,_Illinois" title="Rock Falls, Illinois">Rock Falls</a></li> <li><a href="/wiki/Rockdale,_Illinois" title="Rockdale, Illinois">Rockdale</a></li> <li><b><a href="/wiki/Rockford,_Illinois" title="Rockford, Illinois">Rockford</a></b></li> <li><a href="/wiki/Rockton,_Illinois" title="Rockton, Illinois">Rockton</a></li> <li><a href="/wiki/Rodden,_Illinois" title="Rodden, Illinois">Rodden</a></li> <li><a href="/wiki/Romeoville,_Illinois" title="Romeoville, Illinois">Romeoville</a></li> <li><a href="/wiki/Roscoe,_Illinois" title="Roscoe, Illinois">Roscoe</a></li> <li><a href="/wiki/Rutland,_Illinois" title="Rutland, Illinois">Rutland</a></li> <li><a href="/wiki/St._Anne,_Illinois" title="St. Anne, Illinois">St. Anne</a></li> <li><a href="/wiki/Sandwich,_Illinois" title="Sandwich, Illinois">Sandwich</a></li> <li><a href="/wiki/Savanna,_Illinois" title="Savanna, Illinois">Savanna</a></li> <li><a href="/wiki/Scales_Mound,_Illinois" title="Scales Mound, Illinois">Scales Mound</a></li> <li><a href="/wiki/Seneca,_Illinois" title="Seneca, Illinois">Seneca</a></li> <li><a href="/wiki/Serena,_Illinois" title="Serena, Illinois">Serena</a></li> <li><a href="/wiki/Seward,_Illinois" title="Seward, Illinois">Seward</a></li> <li><a href="/wiki/Shabbona,_Illinois" title="Shabbona, Illinois">Shabbona</a></li> <li><a href="/wiki/Shannon,_Illinois" title="Shannon, Illinois">Shannon</a></li> <li><a href="/wiki/Sheridan,_Illinois" title="Sheridan, Illinois">Sheridan</a></li> <li><a href="/wiki/Shirland,_Illinois" title="Shirland, Illinois">Shirland</a></li> <li><a href="/wiki/Shorewood,_Illinois" title="Shorewood, Illinois">Shorewood</a></li> <li><a href="/wiki/Somonauk,_Illinois" title="Somonauk, Illinois">Somonauk</a></li> <li><a href="/wiki/South_Beloit,_Illinois" title="South Beloit, Illinois">South Beloit</a></li> <li><a href="/wiki/South_Wilmington,_Illinois" title="South Wilmington, Illinois">South Wilmington</a></li> <li><a href="/wiki/Spring_Grove,_Illinois" title="Spring Grove, Illinois">Spring Grove</a></li> <li><a href="/wiki/Spring_Valley,_Illinois" title="Spring Valley, Illinois">Spring Valley</a></li> <li><a href="/wiki/Sterling,_Illinois" title="Sterling, Illinois">Sterling</a></li> <li><a href="/wiki/Steward,_Illinois" title="Steward, Illinois">Steward</a></li> <li><a href="/wiki/Stillman_Valley,_Illinois" title="Stillman Valley, Illinois">Stillman Valley</a></li> <li><a href="/wiki/Stockton,_Illinois" title="Stockton, Illinois">Stockton</a></li> <li><a href="/wiki/Streator,_Illinois" title="Streator, Illinois">Streator</a></li> <li><a href="/wiki/Sublette,_Illinois" title="Sublette, Illinois">Sublette</a></li> <li><a href="/wiki/Sun_River_Terrace,_Illinois" title="Sun River Terrace, Illinois">Sun River Terrace</a></li> <li><a href="/wiki/Sycamore,_Illinois" title="Sycamore, Illinois">Sycamore</a></li> <li><a href="/wiki/Symerton,_Illinois" title="Symerton, Illinois">Symerton</a></li> <li><a href="/wiki/Tampico,_Illinois" title="Tampico, Illinois">Tampico</a></li> <li><a href="/wiki/Thomson,_Illinois" title="Thomson, Illinois">Thomson</a></li> <li><a href="/wiki/Timberlane,_Illinois" title="Timberlane, Illinois">Timberlane</a></li> <li><a href="/wiki/Toluca,_Illinois" title="Toluca, Illinois">Toluca</a></li> <li><a href="/wiki/Tonica,_Illinois" title="Tonica, Illinois">Tonica</a></li> <li><a href="/wiki/Triumph,_Illinois" title="Triumph, Illinois">Triumph</a></li> <li><a href="/wiki/Troy_Grove,_Illinois" title="Troy Grove, Illinois">Troy Grove</a></li> <li><a href="/wiki/Union,_Illinois" title="Union, Illinois">Union</a></li> <li><a href="/wiki/Union_Hill,_Illinois" title="Union Hill, Illinois">Union Hill</a></li> <li><a href="/wiki/Verona,_Illinois" title="Verona, Illinois">Verona</a></li> <li><a href="/wiki/Waddams_Grove,_Illinois" title="Waddams Grove, Illinois">Waddams Grove</a></li> <li><a href="/wiki/Walnut,_Illinois" title="Walnut, Illinois">Walnut</a></li> <li><a href="/wiki/Warren,_Illinois" title="Warren, Illinois">Warren</a></li> <li><a href="/wiki/Waterman,_Illinois" title="Waterman, Illinois">Waterman</a></li> <li><a href="/wiki/Watseka,_Illinois" title="Watseka, Illinois">Watseka</a></li> <li><a href="/wiki/West_Brooklyn,_Illinois" title="West Brooklyn, Illinois">West Brooklyn</a></li> <li><a href="/wiki/Wenona,_Illinois" title="Wenona, Illinois">Wenona</a></li> <li><a href="/wiki/Wilmington,_Will_County,_Illinois" class="mw-redirect" title="Wilmington, Will County, Illinois">Wilmington</a></li> <li><a href="/wiki/Wilton,_Illinois" title="Wilton, Illinois">Wilton</a></li> <li><a href="/wiki/Wilton_Center,_Illinois" title="Wilton Center, Illinois">Wilton Center</a></li> <li><a href="/wiki/Winnebago,_Illinois" title="Winnebago, Illinois">Winnebago</a></li> <li><a href="/wiki/Winslow,_Illinois" title="Winslow, Illinois">Winslow</a></li> <li><a href="/wiki/Wonder_Lake,_Illinois" title="Wonder Lake, Illinois">Wonder Lake</a></li> <li><a href="/wiki/Wonder_Lake_(CDP),_Illinois" title="Wonder Lake (CDP), Illinois">Wonder Lake (CDP)</a></li> <li><a href="/wiki/Woodstock,_Illinois" title="Woodstock, Illinois">Woodstock</a></li> <li><a href="/wiki/Woosung,_Illinois" title="Woosung, Illinois">Woosung</a></li></ul> </div> <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=Area_codes_815_and_779&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/List_of_North_American_Numbering_Plan_area_codes" title="List of North American Numbering Plan area codes">List of North American Numbering Plan area codes</a></li> <li><a href="/wiki/List_of_Illinois_area_codes" title="List of Illinois area codes">List of Illinois area codes</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=Area_codes_815_and_779&action=edit&section=4" 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 .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <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 class="citation book cs1"><i>Notes on Distance Dialing</i>. American Telephone and Telegraph Company. September 1956. p. Sec II-App A-1.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Notes+on+Distance+Dialing&rft.pages=Sec+II-App+A-1&rft.pub=American+Telephone+and+Telegraph+Company&rft.date=1956-09&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArea+codes+815+and+779" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.areacodehelp.com/where/area_code_309.shtml">History of area code 309</a></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Area_codes_815_and_779&action=edit&section=5" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://www.nationalnanpa.com/area_code_maps/display.html?il">NANPA area code map of Illinois </a></li> <li><a rel="nofollow" class="external text" href="http://www.att.com/gen/general?pid=1496">Area Code Overlay Approved for 815 Area Code</a> - general information from <a href="/wiki/AT%26T" title="AT&T">AT&T</a>, the <a href="/wiki/Regional_Bell_Operating_Company" title="Regional Bell Operating Company">RBOC</a> for the area code</li></ul> <table class="wikitable" style="font-size: 95%;" width="80%" align="center"> <caption><a href="/wiki/Illinois" title="Illinois">Illinois</a> area codes: <a href="/wiki/Area_codes_217_and_447" title="Area codes 217 and 447">217/447</a>, <a href="/wiki/Area_codes_309_and_861" title="Area codes 309 and 861">309/861</a>, <a href="/wiki/Area_code_312" title="Area code 312">312</a>, <a href="/wiki/Area_codes_630_and_331" title="Area codes 630 and 331">630/331</a>, <a href="/wiki/Area_codes_618_and_730" title="Area codes 618 and 730">618/730</a>, <a href="/wiki/Area_codes_708_and_464" title="Area codes 708 and 464">708/464</a>, <a href="/wiki/Area_code_773" title="Area code 773">773</a>, <a class="mw-selflink selflink">815/779</a>, <a href="/wiki/Area_codes_847_and_224" title="Area codes 847 and 224">847/224</a>, <a href="/wiki/Area_code_872" title="Area code 872">872</a> </caption> <tbody><tr> <td width="35%" style="text-align:center;"> </td> <td width="30%" style="text-align:center;"><b>North</b>: <a href="/wiki/Area_codes_608_and_353" title="Area codes 608 and 353">608/353</a>, <a href="/wiki/Area_code_262" title="Area code 262">262</a> </td> <td width="35%" style="text-align:center;"> </td></tr> <tr> <td width="10%" style="text-align:center;"><b>West</b>: <a href="/wiki/Area_code_563" title="Area code 563">563</a> </td> <td width="35%" style="text-align:center;"><b>779/815 </b> </td> <td width="30%" style="text-align:center;"><b>East</b>: <a href="/wiki/Area_codes_847_and_224" title="Area codes 847 and 224">847/224</a>, <a href="/wiki/Area_codes_630_and_331" title="Area codes 630 and 331">630/331</a>, <a href="/wiki/Area_codes_708_and_464" title="Area codes 708 and 464">708/464</a> </td></tr> <tr> <td width="35%" style="text-align:center;"> </td> <td width="30%" style="text-align:center;"><b>South</b>: <a href="/wiki/Area_codes_309_and_861" title="Area codes 309 and 861">309/861</a>, <a href="/wiki/Area_codes_217_and_447" title="Area codes 217 and 447">217/447</a> </td> <td width="35%" style="text-align:center;"> </td></tr> <tr> <td colspan="3" style="text-align:center;"><a href="/wiki/Wisconsin" title="Wisconsin">Wisconsin</a> area codes: <a href="/wiki/Area_code_262" title="Area code 262">262</a>, <a href="/wiki/Area_code_414" title="Area code 414">414</a>, <a href="/wiki/Area_codes_608_and_353" title="Area codes 608 and 353">608/353</a>, <a href="/wiki/Area_codes_715_and_534" title="Area codes 715 and 534">715/534</a>, <a href="/wiki/Area_codes_920_and_274" title="Area codes 920 and 274">920/274</a> </td></tr> <tr> <td colspan="3" style="text-align:center;"><a href="/wiki/Indiana" title="Indiana">Indiana</a> area codes: <a href="/wiki/Area_code_219" title="Area code 219">219</a>, <a href="/wiki/Area_code_260" title="Area code 260">260</a>, <a href="/wiki/Area_codes_317_and_463" title="Area codes 317 and 463">317/463</a>, <a href="/wiki/Area_code_574" title="Area code 574">574</a>, <a href="/wiki/Area_code_765" title="Area code 765">765</a>, <a href="/wiki/Area_codes_812_and_930" title="Area codes 812 and 930">812/930</a> </td></tr> <tr> <td colspan="3" style="text-align:center;"><a href="/wiki/Iowa" title="Iowa">Iowa</a> area codes: <a href="/wiki/Area_code_319" title="Area code 319">319</a>, <a href="/wiki/Area_code_515" title="Area code 515">515</a>, <a href="/wiki/Area_code_563" title="Area code 563">563</a>, <a href="/wiki/Area_code_641" title="Area code 641">641</a>, <a href="/wiki/Area_code_712" title="Area code 712">712</a> </td></tr> </tbody></table> <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=Area_codes_815_and_779&params=40.195659_N_89.516602_W_region:US-IL"><span class="geo-nondefault"><span class="geo-dms" title="Maps, aerial photos, and other data for this location"><span class="latitude">40°11′44″N</span> <span class="longitude">89°31′00″W</span></span></span><span class="geo-multi-punct"> / </span><span class="geo-default"><span class="geo-dec" title="Maps, aerial photos, and other data for this location">40.195659°N 89.516602°W</span><span style="display:none"> / <span class="geo">40.195659; -89.516602</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=Area_codes_815_and_779&oldid=1234021865">https://en.wikipedia.org/w/index.php?title=Area_codes_815_and_779&oldid=1234021865</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:Telecommunications-related_introductions_in_1947" title="Category:Telecommunications-related introductions in 1947">Telecommunications-related 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