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Illinois ZIP code map and Illinois ZIP code list. View all zip codes in IL or use the free zip code lookup.
Aug 1, 2024 · List of all Zip Codes for the state of Illinois, IL. Includes all counties and cities in Illinois.
Zip CodeCityCountyTypeStandardStandardStandardP.O. BoxList of ZIP Codes in Illinois. ZIP Code ZIP Code Place Name County ZIP Code Type; 60002: Antioch: Lake County: Standard: 60004: Arlington Heights: Cook County ...
Information on the FIPS county code, county seat, year of establishment, origin, etymology, population, area and map of each county is included in the table below.
There are 102 counties in the state of Illinois. Old counties. Dane County was renamed in 1840 to the current Christian County. The original Knox County, Illinois, became extinct with the formation of the Illinois Territory in 1809. It became Knox County, Indiana.
CountyFips Code [ 1]County Seat [ 2]Established [ 2]1825181918171837Illinois Cities & Towns. List of all Zip Codes for the state of Illinois. Includes all counties and cities in IL.
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Also see: Illinois Area Codes by County. ZIP Codes for Cities & Towns - Sorted by County