ZIP CodesZIP codes in Napa County, California
Napa County, California has 12 ZIP codes in this list, from 94503 to 94599. They cover 10 places, among them Napa, American Canyon, Angwin and Calistoga.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 94503 | American Canyon | 27.0 | 38.167, -122.255 |
| 94508 | Angwin | 16.0 | 38.577, -122.448 |
| 94515 | Calistoga | 116 | 38.582, -122.581 |
| 94558 | Napa | 402 | 38.455, -122.256 |
| 94559 | Napa | 41.6 | 38.290, -122.284 |
| 94562 | Oakville | 0.3 | 38.438, -122.399 |
| 94567 | Pope Valley | 72.6 | 38.615, -122.428 |
| 94573 | Rutherford | 1.5 | 38.459, -122.422 |
| 94574 | Saint Helena | 124 | 38.514, -122.462 |
| 94576 | Deer Park | 0.3 | 38.549, -122.476 |
| 94581 | Napa | no area | 38.297, -122.285 |
| 94599 | Yountville | 7.9 | 38.402, -122.361 |
The ZIP code areas of Napa County add up to about 810 square miles of land (2,097 sq km) as the Census Bureau draws them. The largest is 94558 (Napa), with 402 square miles.
Places with more than one code here: Napa (3 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: American Canyon, CA 94503.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.