Sierra County, California
Sierra County, California, has 3,098 residents (July 2025 estimate). Its county seat is Downieville. It uses Pacific Time and covers 953 sq mi (2,469 km²) of land.
- Resident population, July 2025
- 3,098
- Land area
- 953 sq mi (2,469 km²)
- County seat or government
- Downieville
- Time zone
- Pacific TimeUTC-08:00 in January; UTC-07:00 in July
- Median household income
- $63,355 ± $21,034
- Median home value
- $331,900 ± $47,477
- Homes lived in by their owners
- 72.1% ± 8.8 points
- County type
- County
- Metro or micro area
- Outside any metro or micro areaNext to: Truckee-Grass Valley, CA micro area, Reno, NV metro area, Susanville, CA micro area, and Yuba City, CA metro area
- Water area
- 9 sq mi (23.3 km²)
- State
- California
- County code (FIPS)
- 06091
- Coordinates (central point)
- 39.576925, -120.521993
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Sierra County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Pacific TimeAmerica/Los_Angeles | UTC-08:00 in January; UTC-07:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 894392,532 people
- 961181,328 people
- 96105799 people
- 95960540 people
- 95922425 people
- 96124387 people
- 96126351 people
- 96125263 people
- 95936144 people
- 95944122 people
- 9591019 people
11 ZIP Code areas overlap Sierra County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
School districts in Sierra County, largest first
- Sierra-Plumas Joint Unified School District3,470 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Loyalton, California (city)748 people
- Sierra Brooks, California (CDP)397 people
- Calpine, California (CDP)356 people
- Sierraville, California (CDP)351 people
- Sierra City, California (CDP)250 people
- Downieville, California (CDP)126 people
- Goodyears Bar, California (CDP)122 people
- Verdi, California (CDP)70 people
- Pike, California (CDP)34 people
- Alleghany, California (CDP)19 people
- Sattley, California (CDP)0 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Nevada County, California23 mi southwest
- Plumas County, California33 mi northwest
- Yuba County, California49 mi southwest
- Lassen County, California79 mi north
- Washoe County, Nevada92 mi northeast
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 where you are now, check its ZIP area, or check the time zone where you are.
Areas that only touch the edge
These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.