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 Winnebago County Address Data
Businesses Addresses: 10,122
PO Box Addresses: 3,376
Residential Addresses: 139,494
Multi-Family Addresses: 11,596
Single Family Addresses: 126,873
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Map of Winnebago County, IL ZIP Codes With Actual (Default) City Names
