Zip Area Code

Hammond, Illinois

Hammond, Illinois, in Piatt County, has ZIP code 61929 and area code 217, with 447 as an overlay.

ZIP code
61929
Area codes
217, 447
Time zone
Central Time
Coordinates
39.7946, -88.5793

ZIP codes in Hammond

ZIP codePost officeCountyArea codes
61929HammondPiatt County217, 447

Area codes for Hammond

  • Area code 217

    In service since 1947. Shares its area with 447. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 447

    In service since March 27, 2021. Shares its area with 217. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

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

Hammond is in the Central Time zone.

Towns near Hammond