Zip Area Code

West Chicago, Illinois

West Chicago, Illinois, in DuPage County, has ZIP codes 60185 and 60186 and area code 630, with 331 as an overlay.

ZIP codes
60185, 60186
Area codes
630, 331
Time zone
Central Time
Coordinates
41.8867, -88.2031

ZIP codes in West Chicago

ZIP codePost officeCountyArea codes
60185West ChicagoDuPage County630, 331
60186*West ChicagoDuPage County630, 331

* No mapped delivery area: P.O. boxes or a single organization. Area codes are those of the nearest ZIP code area.

Area codes for West Chicago

  • Area code 630

    In service since August 3, 1996. Shares its area with 331. Local calls are dialed with 1 plus ten digits.

  • Area code 331

    In service since October 7, 2007. Shares its area with 630. 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

West Chicago is in the Central Time zone.

Towns near West Chicago