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309 Area Code

Area code 309 serves Peoria, Bloomington, Normal, Moline, Romeoville and nearby communities in Illinois. It has been in service since January 1, 1957.

StateIllinois
Time zoneCentral
Local time now…
Prefixes in use786
Overlay with861
Projected to run out2102
PeoriaBloomingtonNormalMolineRomeovilleRock IslandPekinGalesburgEast PeoriaCrest HillEast MolineMortonWashingtonMacombCantonKewaneeMonmouthSilvisGeneseoChillicotheBartonvillePeoria HeightsEurekaMilanPeoriaBloomingtonMolineRomeovilleGalesburg
Cities and towns served by area code 309

Who issues 309 numbers

Mobile 18%VoIP and cable 27%Landline 56%

Share of the 786 prefixes (the three digits after 309) assigned to each type of carrier. Classification by carrier name, approximate.

CarrierPrefixes
Frontier143
AT&T (Illinois Bell)83
Onvoy (Sinch)82
Lumen (Level 3)66
Verizon Wireless46
Mediacom Telephony Of Illinois39
AT&T Mobility34
T-Mobile34

Cities and towns in area code 309

CityPopulationOther area codes
Peoria110,920861
Bloomington78,804
Normal53,275
Moline42,362861
Romeoville41,281
Rock Island36,225861
Pekin31,277861
Galesburg28,581
East Peoria22,088
Crest Hill20,695
East Moline20,453
Morton17,565
Washington15,902
Macomb14,530
Canton13,297
Kewanee12,115
Monmouth8,599
Silvis7,979
Geneseo6,505
Chillicothe6,033
Bartonville5,804
Peoria Heights5,767861
Eureka5,129
Milan5,028861

Got a call from 309?

A 309 number was originally issued in Illinois, but that does not prove the caller is there. 27% of 309 prefixes belong to VoIP and cable providers, whose numbers can be bought online and used from anywhere. Caller ID can also be spoofed, so treat urgent requests for money, codes or passwords from any area code with suspicion, and call back on a number you already know.

All 786 prefixes in area code 309

Format: (309) XXX-YYYY. Carrier is the company the block was originally assigned to; numbers may since have been ported to another carrier.

Questions about area code 309

Where is area code 309?
Area code 309 is in Illinois. It covers Peoria, Bloomington, Normal, Moline, Romeoville, Rock Island and 18 more cities and towns.
What time zone is area code 309?
Area code 309 is in the Central time zone.
Is 309 a toll-free number?
No. 309 is a geographic area code in Illinois. Toll-free numbers in the US start with 800, 833, 844, 855, 866, 877 or 888.
Why does 309 share its area with 861?
309 and 861 form an overlay: they cover the same territory, so new numbers there can get any of these codes, and local calls need all 10 digits.
Will area code 309 run out of numbers?
NANPA's latest forecast projects the 309/861 overlay to exhaust in the fourth quarter of 2102. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.

Other area codes in Illinois