Sierra County Map, California

Sierra County Map Collection
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Sierra County, California

Sierra County is a tiny slice of the Sierra Nevada, tucked away in the northeast. It’s California’s second-least populous county. You could almost fit everyone into a big concert hall.
The county seat, Downieville, is this little old mining town that mountain bikers love. There’s no stoplight in the whole county, if that tells you anything.
If you’re into fishing, hiking, or just getting away from it all, Sierra County is your place. Just don’t expect much nightlife… or cell service, for that matter.
Category | Details |
---|---|
County Name | Sierra County |
County Seat | Downieville |
Population | Approximately 3,000 |
Cities, Towns, and Communities | Downieville, Sierra City, Loyalton, Calpine, Alleghany |
Interstates and Highways | SR 49, SR 89 |
FIPS Code | 06-091 |
Total Area (Land and Water) | 3,287 square miles (Land: 3,223 sq mi, Water: 64 sq mi) |
Adjacent Counties (and Direction) | Nevada County (South), Yuba County (West), Plumas County (North), Lassen County (Northeast), Washoe County, Nevada (East) |
Time Zone | Pacific Standard Time (PST) |
State | California |
Coordinates | 39.5960° N, 120.7422° W |
Etymology | Named after the Sierra Nevada mountain range |
Major Landmarks | Sierra Buttes, Yuba River, Downieville Historic District, Plumas-Eureka State Park |
Website | Sierra County Website |
PHYSICAL MAP
Sierra County Topographic Map
Our zoom tool enhances this topographic map showing Sierra County’s rugged high Sierra Nevada landscape. The terrain features deep river canyons, forested slopes, and mountain peaks along the crest.

SATELLITE IMAGERY
Sierra County Satellite Map
Deeply incised river canyons cut through this mountainous county. Few roads or communities interrupt the predominantly forested landscape in this satellite image.

OUTLINE MAP
Sierra County Blank Map
This blank map presents Sierra County’s compact outline in the northern Sierra Nevada mountains. The eastern boundary follows the California-Nevada state line in this sparsely populated region.

Neighboring Counties
Here are the 5 neighboring counties of Sierra County:
California County Map
Ever wonder how California’s 58 counties stack up? Our California county map lays them all out, from the coast to the deserts. Take a look and find the ones you know — and maybe a few you don’t.