Napa County ZIP Codes
California, United States · 12 codes
Napa County in California has 12 ZIP codes, from 94503 to 94599, serving 12 places.
ZIP codes in Napa
Frequently asked questions
What is the ZIP code of Napa?
Napa has 12 ZIP codes, from 94503 to 94599. The table lists the places each one serves.
How many places are listed in Napa County?
12 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.