Napa County, California
Napa County is a county in California. Its county FIPS code is 06055. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 06055
- Representative coordinates
- 38.507100, -122.325904
- County type
- County
- County seat or government
- Napa
- Resident population, July 2025
- 132,949
- Land area
- 1,947.608 km²
- Water area
- 104.443 km²
- State
- California
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Napa County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Los_Angeles | UTC-08:00 in January; UTC-07:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
94503 · 94508 · 94515 · 94558 · 94559 · 94562 · 94567 · 94573 · 94574 · 94576 · 94591 · 94599 · 95442 · 95461 · 95476 · 95606 · 95688
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Use the US government local-office directory ↗ to find the office responsible for your address. A county website has not been confidently matched here. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county at your current point, check its ZIP area, or find its physical time zone.