Zip Area Code

Marshall County, Illinois

Marshall County, Illinois, has 9 towns and 8 ZIP codes, in area code 309, with 861 as an overlay.

Towns in Marshall County, A to Z

TownZIP codesArea codes
Camp Grove61424309, 861
Henry61537309, 861
Hopewellnearest61565309, 861
La Rose61541309, 861
Lacon61540309, 861
Sparland61565309, 861
Speer61479309, 861
Toluca61369309, 861
Varna61375309, 861

ZIP codes in Marshall County

Area codes in Marshall County

  • Area code 309

    In service since 1957. Shares its area with 861. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 861

    In service since February 24, 2023. Shares its area with 309. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.