Note: Every ZIP Code has a single ACTUAL City Name assigned by the US Postal Service (USPS).
See the specific ZIP Code for acceptable Alternate City Names and spelling variations.
ZIP Codes in Cook County Address Data
Businesses Addresses: 168,126
PO Box Addresses: 36,855
Residential Addresses: 2,189,699
Multi-Family Addresses: 893,314
Single Family Addresses: 1,290,970
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Map of Cook County, IL ZIP Codes With Actual (Default) City Names