Sierra County, California
Sierra County is a county in California. Its county FIPS code is 06091. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 06091
- Representative coordinates
- 39.576925, -120.521993
- County type
- County
- County seat or government
- Downieville
- Resident population, July 2025
- 3,098
- Land area
- 2,468.695 km²
- Water area
- 23.299 km²
- State
- California
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Sierra 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
89439 · 95910 · 95922 · 95936 · 95944 · 95960 · 96105 · 96118 · 96124 · 96125 · 96126
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.