Zip Area Code

Fairmont, Illinois

No ZIP code carries the name of Fairmont, Illinois, in Will County; the nearest ZIP codes are 60403, 60432 and 60441, in area code 815, with 779 as an overlay.

Nearest ZIP
60403, 60432, 60441
Area codes
815, 779
Time zone
Central Time
Coordinates
41.5614, -88.0587

Nearest ZIP codes to Fairmont

These are the ZIP codes nearest to Fairmont, each listed with the post office it is named after.

ZIP codePost officeCountyArea codes
60403Crest HillWill County815, 779
60432JolietWill County815, 779
60441LockportWill County815, 779

Area codes for Fairmont

  • Area code 815

    In service since 1947. Shares its area with 779. Local calls are dialed with 1 plus ten digits.

  • Area code 779

    In service since March 17, 2007. Shares its area with 815. Local calls are dialed with 1 plus ten digits.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Fairmont is in the Central Time zone.

Towns near Fairmont