309 area code
Area code 309 is in Illinois. It covers Peoria, Bloomington, Normal and 230 other places: 242 ZIP codes in Peoria, McLean, Rock Island and 17 other counties. Local time there is , Central Time. In service since 1957; 861 (2023) overlays it, so a number from there can have either code.
Who calls from a 309 number
NANPA records the carrier each block of 309 numbers is assigned to. Of the 6.6 million 309 numbers assigned, 35% are with local phone companies (Frontier and AT&T); 33% with cable, internet-calling, business and other carriers (Onvoy); 31% with mobile carriers (Verizon Wireless, T-Mobile and AT&T Mobility).
That is who the numbers were assigned to: people keep their number when they change carrier, so any one number may have moved since.
| Carrier | Kind | Share |
|---|---|---|
| Verizon Wireless | Mobile | 14% |
| Onvoy | Cable, VoIP, other | 14% |
| Frontier | Landline | 14% |
| AT&T | Landline | 10% |
| T-Mobile | Mobile | 7% |
| AT&T Mobility | Mobile | 6% |
An area code says where a number was issued, not where the caller is: people keep their numbers when they move, and caller ID can be set to show any number, which the FCC calls spoofing. If a call you did not expect asks for money or personal details, the FCC advises hanging up and calling the company back on a number you look up yourself. Unwanted calls can be reported to the FTC at ReportFraud.ftc.gov.
Places in area code 309
The 163 places with a telephone rate centre of their own using 309, largest first. Each links to its ZIP codes.
Nearby places using 309
These places have no rate centre of their own in NANPA's records; the nearest one uses 309. Near an area-code boundary that can be wrong for part of a town.
- Normal
- East Peoria
- Silvis
- Bartonville
- Peoria Heights
- Colona
- Milan
- Creve Coeur
- West Peoria
- Coal Valley
- Edwards
- Marquette Heights
- Carbon Cliff
- Bellevue
- Rome
- Lake Camelot
- Heritage Lake
- Twin Grove
- Dahinda
- Minier
- Andalusia
- Rapids City
- Coyne Center
- Oak Run
- East Galesburg
- McLean
- Windsor
- Hopewell
- Norwood
- Rock Island Arsenal
- St. David
- Mapleton
- Dunfermline
- Norris
- Henderson
- Bay View Gardens
- Oak Grove
- Taylor Ridge
- Laura
- Gerlaw
- Gladstone
- Kappa
- Cleveland
- Campbell's Island
- Kingston Mines
- Berwick
- Tennessee
- Bryant
- Banner
- Media
- Goofy Ridge
- Cable
- Shirley
- Browning
- Speer
- Ophiem
- St. Augustine
- Sciota
- Liverpool
- Swedona
ZIP codes in area code 309
242 ZIP codes in 199 towns, by the town each is mailed to, largest first. Each links to its own page.
Where 309 numbers are issued
NANPA's rate centres with the most 309 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.
| Rate centre | Place | Prefixes |
|---|---|---|
PEORIA | Peoria | 155 |
BLOOMINGTN | Bloomington | 76 |
ROCKISLAND | Rock Island | 41 |
MACOMB | Macomb | 23 |
GALESBURG | Galesburg | 20 |
MOLINE | Moline | 17 |
Counties
The counties of its ZIP codes, most residents first, with how many of its ZIP codes each has.
- Peoria County (45)
- McLean County (29)
- Rock Island County (20)
- Tazewell County (18)
- Knox County (17)
- Henry County (15)
- Woodford County (12)
- Fulton County (20)
- McDonough County (10)
- Mercer County (13)
- Warren County (8)
- Marshall County (7)
- Mason County (7)
- Stark County (5)
- Henderson County (6)
- Whiteside County (2)
- De Witt County (1)
- Bureau County (3)
- Hancock County (2)
- Schuyler County (2)
Which code covers where you are now? What area code am I in? answers from your location.
Questions about area code 309
Where is area code 309?
Area code 309 is in Illinois. It covers Peoria, Bloomington, Normal and 230 other places: 242 ZIP codes in Peoria, McLean, Rock Island and 17 other counties.
What ZIP codes are in area code 309?
242 ZIP codes, by the town each is mailed to: Peoria (29, 61601 to 61656), Bloomington (8, 61701 to 61799), Normal (2, 61761 to 61790), Moline (2, 61265 to 61266) and 195 more towns. The full list is on this page.
What time zone is area code 309 in?
Central time.
Is a 309 number a mobile or a landline?
It can be either. 31% of 309 numbers are assigned to mobile carriers and 35% to local phone companies (NANPA, 2026-10-10); the rest are with cable, internet-calling, business and paging carriers. A number keeps its area code when it moves to another carrier.
What area codes overlay 309?
861. They cover the same area as 309, so a new number there can be given any of them.
Does a 309 number mean the caller is in Illinois?
Not necessarily. An area code says where the number was first issued. People keep their numbers when they move or switch carriers, and calling software can show any number, so a 309 call can come from anywhere.
Other area codes in Illinois
- 217 Springfield
- 224 Elgin
- 312 Chicago
- 331 Aurora
- 447 Springfield
- 464 Orland Park
- 618 Belleville
- 630 Aurora
- 708 Orland Park
- 730 Belleville
- 773 Chicago
- 779 Rockford
- 815 Rockford
- 847 Elgin
- 861 Peoria
- 872 Chicago
All 17 Illinois area codes, by area, with the cities each covers
Source: NANPA NPA database, central office code and thousands-block assignments, 2026-10-10. Places are matched to NANPA's rate centres by name; see sources.
Cite this page
zipcodes.pro. “Area code 309.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/309
Underlying data is public domain or openly licensed — sources, vintages and licences.