The 309 area code is a telephone area code serving west-central Illinois. To start a free reverse phone lookup, simply enter the full 10-digit number (including the 309 area code) below and access available caller information such as name, address, and more.
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Phone numbers with the 309 area code originate from the west-central part of the U.S. state of Illinois. This numbering plan area encompasses numerous communities, extending across west-central Illinois.
Area code 309 operates as an overlay system with area code 861. Area code 861 was introduced on February 24, 2023, to the same numbering plan area as 309. Ten-digit dialing became mandatory for the 309 area code on October 24, 2021, due to the nationwide designation of 988 as a dialing code for the National Suicide Prevention Lifeline, anticipating the overlay to mitigate exhaust.
Area code 309 is a General Purpose Code which was placed in service on January 1, 1947.
Our reverse phone lookup will analyze the three-digit prefix of any 309 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, Illinois geographic region, and local calling area associated with the phone number.
| Company | Number of Prefixes |
|---|---|
| FRONTIER NORTH, INC. - IL | 86 |
| ILLINOIS BELL TEL CO | 77 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 35 |
| CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | 22 |
| LEVEL 3 COMMUNICATIONS, LLC - IL | 22 |
| GALLATIN RIVER COMMUNICATIONS DBA CENTURYLINK | 20 |
| UNITED STATES CELLULAR - IL | 19 |
| SPRINT SPECTRUM, L.P. | 17 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 12 |
| MID CENTURY TEL. COOP., INC. | 11 |
| T-MOBILE USA, INC. | 10 |
| ITV-3, LLC D/B/A I3 BROADBAND | 8 |
| MCDONOUGH TEL. COOP. | 7 |
| COMCAST IP PHONE, LLC | 5 |
| GENESEO TEL. CO. | 5 |
| AT&T - LOCAL | 4 |
| MCLEODUSA TELECOMMUNICATION SERVICES, INC. - IL | 4 |
| MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 4 |
| FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL | 3 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 3 |
| METAMORA TEL. CO. | 3 |
| FRONTIER COMMUNICATIONS OF ILLINOIS, INC. | 2 |
| HENRY COUNTY TEL. CO. | 2 |
| ONVOY, LLC | 2 |
| SKYE TELECOM LLC DBA SKYETEL | 2 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 2 |
| WOODHULL COMMUNITY TEL. CO. | 2 |
| ADAMS TEL. COOP. | 1 |
| AT&T CORP. | 1 |
| BANDWIDTH.COM CLEC, LLC - IL | 1 |
| CAMBRIDGE TEL. CO. | 1 |
| CASS TELEPHONE COMPANY | 1 |
| CENTURYLINK COMMUNICATIONS, LLC | 1 |
| CONSOLIDATED COMMUNICATIONS OF CENTRAL ILLINOIS | 1 |
| FRONTIER COMMUNICATIONS OF ORION, INC. | 1 |
| GLASFORD TEL. CO. | 1 |
| GRIDLEY TEL. CO. | 1 |
| MTC COMMUNICATIONS, INC. - IL | 1 |
| MTCO COMMUNICATIONS, INC. | 1 |
| NEW WINDSOR CABLE TV, INC. - IL | 1 |
| NEW WINDSOR TEL. CO. | 1 |
| NUSO, LLC | 1 |
| ONEIDA TEL. EXCH. | 1 |
| PEERLESS NETWORK OF ILLINOIS, LLC - IL | 1 |
| REYNOLDS TEL. CO., INC. | 1 |
| TWILIO INTERNATIONAL, INC. | 1 |
| VIOLA HOME TEL. CO. | 1 |
| WAVENATION, LLC | 1 |
| YMAX COMMUNICATIONS CORP. - IL | 1 |
| Rate Center | Number of Prefixes |
|---|---|
| PEORIA | 96 |
| BLOOMINGTN | 54 |
| ROCKISLAND | 27 |
| GALESBURG | 15 |
| EASTMOLINE | 12 |
| MOLINE | 12 |
| PEKIN | 12 |
| MACOMB | 10 |
| KEWANEE | 9 |
| GENESEO | 6 |
| CANTON | 5 |
| MORTON | 5 |
| METAMORA | 4 |
| SOUTHPEKIN | 3 |
| WASHINGTON | 3 |
| ALEDO | 2 |
| DELAVAN | 2 |
| DUNLAP | 2 |
| EUREKA | 2 |
| GOODFIELD | 2 |
| GREEN VLY | 2 |
| GREENRIVER | 2 |
| GROVELAND | 2 |
| ILLINOISCY | 2 |
| MACKINAW | 2 |
| MONMOUTH | 2 |
| PORT BYRON | 2 |
| WASHBURN | 2 |
| ABINGDON | 1 |
| ALBANY | 1 |
| ALEXIS | 1 |
| ALPHA | 1 |
| ALTONA | 1 |
| ANDOVER | 1 |
| ANNAWAN | 1 |
| ARROWSMITH | 1 |
| ASTORIA | 1 |
| ATKINSON | 1 |
| AVON | 1 |
| BARDOLPH | 1 |
| BELLFLOWER | 1 |
| BENSON | 1 |
| BIGGSVILLE | 1 |
| BISHOPHILL | 1 |
| BLANDINSVL | 1 |
| BRADFORD | 1 |
| BRIMFIELD | 1 |
| BUDA | 1 |
| BUSHNELL | 1 |
| CAMBRIDGE | 1 |
| CARLOCK | 1 |
| CHILLICOTH | 1 |
| COLCHESTER | 1 |
| COLFAX | 1 |
| CONGERVL | 1 |
| CORDOVA | 1 |
| CUBA | 1 |
| DANVERS | 1 |
| DEER CREEK | 1 |
| DOWNS | 1 |
| EASTON | 1 |
| EDGINGTON | 1 |
| EL PASO | 1 |
| ELMIRA | 1 |
| ELMWOOD | 1 |
| ERIE | 1 |
| FAIRVIEW | 1 |
| FARMERCITY | 1 |
| FARMINGTON | 1 |
| FIATT | 1 |
| GALVA | 1 |
| GERMATNHLS | 1 |
| GILSON | 1 |
| GLASFORD | 1 |
| GOOD HOPE | 1 |
| GRIDLEY | 1 |
| HAMPTON | 1 |
| HANNA CITY | 1 |
| HAVANA | 1 |
| HENRY | 1 |
| HEYWORTH | 1 |
| HILLSDALE | 1 |
| HOPEDALE | 1 |
| HUDSON | 1 |
| INDUSTRY | 1 |
| JOY | 1 |
| KIRKWOOD | 1 |
| KNOXVILLE | 1 |
| LA FAYETTE | 1 |
| LACON | 1 |
| LE ROY | 1 |
| LEWISTOWN | 1 |
| LEXINGTON | 1 |
| LITTLETON | 1 |
| LITTLEYORK | 1 |
| MANITO | 1 |
| MAQUON | 1 |
| MARIETTA | 1 |
| MATHERVL | 1 |
| MCLEAN | 1 |
| MINERAL | 1 |
| MINIERAGTN | 1 |
| MINONK | 1 |
| MOSSVILLE | 1 |
| NEPONSET | 1 |
| NEW BOSTON | 1 |
| NEWWINDSOR | 1 |
| NORTHPEKIN | 1 |
| ONEIDA | 1 |
| OQUAWKA | 1 |
| ORION | 1 |
| PLYMOUTH | 1 |
| PRINCEVL | 1 |
| RARITAN | 1 |
| REYNOLDS | 1 |
| RIO | 1 |
| ROANOKE | 1 |
| ROSEVILLE | 1 |
| SAN JOSE | 1 |
| SAYBROOK | 1 |
| SHERRARD | 1 |
| SPARLAND | 1 |
| SPRING BAY | 1 |
| STANFORD | 1 |
| STRONGHST | 1 |
| SUNNYLAND | 1 |
| TABLEGROVE | 1 |
| TALBOTT | 1 |
| TOULON | 1 |
| TOWANDA | 1 |
| TREMONT | 1 |
| VARNA | 1 |
| VERMONT | 1 |
| VICTORIA | 1 |
| VIOLA | 1 |
| WATAGA | 1 |
| WILLIMSFLD | 1 |
| WOODHULL | 1 |
| WYOMING | 1 |
| YATES CITY | 1 |
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