Zip Area Code

Mendon, Illinois

Mendon, Illinois, in Adams County, has ZIP code 62351 and area code 217, with 447 as an overlay.

ZIP code
62351
Area codes
217, 447
Time zone
Central Time
Coordinates
40.0857, -91.2899

ZIP codes in Mendon

ZIP codePost officeCountyArea codes
62351MendonAdams County217, 447

Area codes for Mendon

  • 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

Mendon is in the Central Time zone.

Towns near Mendon