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 Union County Address Data
Businesses Addresses: 941
PO Box Addresses: 1,587
Residential Addresses: 11,773
Multi-Family Addresses: 385
Single Family Addresses: 11,388
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Map of Union County, IL ZIP Codes With Actual (Default) City Names