10 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 94558 | Napa | 64,552 |
| 94559 | Napa | 27,828 |
| 94503 | American Canyon | 21,852 |
| 94574 | Saint Helena | 7,646 |
| 94599 | Yountville | 3,388 |
| 94508 | Angwin | 3,298 |
| 94567 | Pope Valley | 673 |
| 94576 | Deer Park | 130 |
| 94573 | Rutherford | 81 |
| 94562 | Oakville | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 10 ZCTAs in Napa County, California (US Census).