Illinois City Name List
This is the list of Cities in Illinois. The zip code, county and city are displayed in the list. You can click the City Name to get 5-digit zip code and 5-digit plus 4 zip code.
The primary city name as designated by the United States Postal Service. The USPS designates cities in all uppercase (ie. NEW YORK). The Post Office “city” name associated with a particular ZIP Code in the mailing address for a residence may differ from the legal municipality or district in which the housing unit is actually located.