Zip Area Code

Area code 815

Area code 815 is an Illinois area code, in service since 1947.

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

Local calls are dialed with 1 plus ten digits.

It is in the Central Time zone.

In service since
1947
Overlays
779
Local dialing
1 plus ten digits
Time zone
Central Time
ZIP codes
282

Map

Map of the 815 area codeThe shaded area shows where 815 numbers are rated, with the neighboring area codes outlined around it.219217608660269319563630309847262765574708773RockfordJolietKankakeeDekalbMchenrySterlingMorrisPrinceton
Approximate 815 coverage, drawn from U.S. Census ZIP code areas and NANPA rate centers. Dashed lines are state borders.

Main cities in area code 815

Overlays and neighboring area codes

Overlay, serving the same area: 779.

Neighboring area codes: 219, 217, 608, 573, 660, 269, 641, 319, 563, 630, 309, 847, 262, 765, 574, 708, 773, 312.

Counties in area code 815

Towns in area code 815

And 296 more towns: every town in Illinois.