Washington County, Iowa ZIP Codes
ZIP Codes in Washington County with Associated Cities & Towns
Washington County, IA - Standard ZIP Codes
ZIP Codes in Washington County Address Data
- Businesses Addresses: 1,599
- PO Box Addresses: 1,716
- Residential Addresses: 16,565
- Multi-Family Addresses: 869
- Single Family Addresses: 15,696
Map of Washington County, IA ZIP Codes With Actual (Default) City Names
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