ZIP codes in Illinois
632 ZIP codes across 344 cities in Illinois. Pick a city or search a specific code.
Cities in Illinois
Chicago 84Springfield 35Peoria 29Rockford 14Aurora 10Bloomington 8Palatine 7Schaumburg 7Champaign 6Decatur 6Evanston 6Joliet 6Naperville 6Elgin 5Des Plaines 4Arlington Heights 3Waukegan 3Bolingbrook 2
ZIP codes in Illinois — notes
ZIP codes in Illinois begin with prefixes such as 60, 61, 62. Each code is tied to a primary post office or delivery area, so a single ZIP may cover more than one census place. Use the search box above for any specific code.