This table ranks all 12 ZIP codes in the Napa, CA MSA by estimated 2022 population, from highest to lowest.
| # | ZIP Code | Place Name | Population (2022) |
|---|---|---|---|
| 1 | ZIP 94558 | Napa | 65,084 |
| 2 | ZIP 94591 | Vallejo | 59,026 |
| 3 | ZIP 94559 | Napa | 28,224 |
| 4 | ZIP 94503 | American Canyon | 21,791 |
| 5 | ZIP 94574 | Saint Helena | 7,827 |
| 6 | ZIP 94515 | Calistoga | 7,024 |
| 7 | ZIP 95461 | Middletown | 3,909 |
| 8 | ZIP 94599 | Yountville | 3,428 |
| 9 | ZIP 94508 | Angwin | 3,406 |
| 10 | ZIP 94567 | Pope Valley | 719 |
| 11 | ZIP 94576 | Deer Park | 171 |
| 12 | ZIP 94573 | Rutherford | 107 |