Founded in 1852, Sierra County is one of 58 counties in the state of California. Historically, Sierra County was formed from Yuba. The city of Downieville is the county seat. With FIPS code of 91, Sierra County has a population of 3,283 and area of 953 square miles (2,468 km2).
List of all cities in Sierra County, CA alphabetically
| City/Town | Postal Code | Area Code |
| Alleghany, CA | 95910 | 530 |
| Bassetts, CA | 96125 | 530 |
| Calpine, CA | 96124 | 530 |
| Downieville, CA | 95936 | 530 |
| Forest City, CA | 95910 | 530 |
| Goodyears Bar, CA | 95944 | 530 |
| Loyalton, CA | 96118 | 530 |
| Sattley, CA | 96124 | 530 |
| Sierra City, CA | 96125 | 530 |
| Sierraville, CA | 96126 | 530 |
Map of Cities in Sierra County, CA
