Zip Area Code

Carroll County, Illinois

Carroll County, Illinois, has 8 towns and 7 ZIP codes, in area code 815, with 779 as an overlay.

Towns in Carroll County, A to Z

TownZIP codesArea codes
Chadwick61014815, 779
Lake Carrollnearest61046815, 779
Lanark61046815, 779
Milledgeville61051815, 779
Mount Carroll61053815, 779
Savanna61074815, 779
Shannon61078815, 779
Thomson61285815, 779

ZIP codes in Carroll County

Area codes in Carroll County

  • 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.