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Area code 309

Area code 309 Peoria, Illinois

Area code 309 is in Illinois, with numbers assigned in Peoria, Bloomington, Rock Island and 155 more places. It’s 11:12 PM there now.

State
Illinois17 area codes in Illinois
Time zone
Central11:12 PM there now
Exchanges
786158 places
Overlay
861Same area, 10-digit dialing
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Where area code 309 is

Numbers in 309 are assigned to 158 places in 23 counties: Peoria County, McLean County, Rock Island County, Tazewell County, Knox County, Henry County, plus 17 more.

Peoria has the most, 20% of the exchanges; the rest are spread across 157 other places.

  • Peoria155
  • Bloomington76
  • Rock Island41
  • Macomb23
  • Galesburg20
  • Pekin17
  • Moline17
  • East Moline16
  • Canton13
  • Kewanee13
  • Morton8
  • Monmouth8
  • Geneseo7
  • Washington6
  • Mossville6
  • Wyoming5
  • South Pekin5
  • Aledo5
  • Spring Bay4
  • North Pekin4
  • Farmington4
  • Chillicothe4
  • Hampton4
  • Metamora4

Phone companies in 309

786 blocks of numbers in 309 are held by 65 phone companies. The most belong to Frontier (143), AT&T (83) and Inteliquent (74).

A mix: about 18% wireless, 46% local phone and cable and 36% other carriers, including internet phone services.

A block’s holder is the company it was first assigned to; numbers can move to other carriers since.

History and overlays

309 went into service in 1957.

861 (since 2023) shares the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.

80 new exchanges were assigned since 2021, the latest in September 2026.

Calling 309

It’s 11:12 PM Central time in 309 right now.

From elsewhere in the U.S., dial 1, 309 and the 7-digit number; inside the area, all 10 digits too.

Nearby area codes

Illinois has 17 area codes: 217, 224, 309, 312, 331, 447, 464, 618, 630, 708, 730, 773, 779, 815, 847, 861 and 872.

From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.

Map of the 309 area code

Map of the 309 area code around Peoria, Bloomington and Rock Island, Illinois.

Interactive map © OpenStreetMap contributors

Cities on the map

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Questions about 309

Where is area code 309?

In Illinois, covering Peoria, Bloomington and Rock Island and other places across 23 counties.

What time zone is 309 in?

Central time. It was 11:12 PM there when this page loaded.

Is 309 an overlay?

Yes. 861 serves the same area, so dial all 10 digits for local calls.

Which phone companies have 309 numbers?

65 companies hold blocks; the most belong to Frontier, AT&T and Inteliquent. About 18% of blocks are wireless.

Is 309 running out of numbers?

Not on record. 80 new exchanges have been assigned since 2021.