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 Napa County Address Data
Businesses Addresses: 8,333
PO Box Addresses: 4,803
Residential Addresses: 70,210
Multi-Family Addresses: 8,233
Single Family Addresses: 61,331
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Map of Napa County, CA ZIP Codes With Actual (Default) City Names