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 Washington County Address Data
Businesses Addresses: 1,639
PO Box Addresses: 1,559
Residential Addresses: 16,890
Multi-Family Addresses: 899
Single Family Addresses: 15,991
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Map of Washington County, IA ZIP Codes With Actual (Default) City Names