Zip Area Code

Hennepin, Illinois

Hennepin, Illinois, in Putnam County, has ZIP code 61327 and area code 815, with 779 as an overlay.

ZIP code
61327
Area codes
815, 779
Time zone
Central Time
Coordinates
41.2352, -89.3218

ZIP codes in Hennepin

ZIP codePost officeCountyArea codes
61327HennepinPutnam County815, 779

Area codes for Hennepin

  • 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

Hennepin is in the Central Time zone.

Towns near Hennepin