Zip Area Code

Area code 309

Area code 309 is an Illinois area code, in service since 1957.

861 serves the same area as an overlay, so neighbors can have numbers in any of these codes.

Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

It is in the Central Time zone.

In service since
1957
Overlays
861
Local dialing
ten digits; dialing 1 plus ten digits also works
Time zone
Central Time
ZIP codes
207

Map

Map of the 309 area codeThe shaded area shows where 309 numbers are rated, with the neighboring area codes outlined around it.217573660641319563630815847708773PeoriaBloomingtonRock IslandMacombGalesburgPekinKewaneeChillicothe
Approximate 309 coverage, drawn from U.S. Census ZIP code areas and NANPA rate centers. Dashed lines are state borders.

Main cities in area code 309

Overlays and neighboring area codes

Overlay, serving the same area: 861.

Neighboring area codes: 217, 573, 660, 641, 319, 563, 630, 815, 847, 765, 708, 773, 312.

Counties in area code 309

Towns in area code 309

And 179 more towns: every town in Illinois.