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 Knox County Address Data
Businesses Addresses: 1,764
PO Box Addresses: 2,063
Residential Addresses: 22,573
Multi-Family Addresses: 1,687
Single Family Addresses: 20,686
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Map of Knox County, IL ZIP Codes With Actual (Default) City Names
