Alpine County, California

Alpine County
Flag of Alpine County
Official seal of Alpine County
Interactive map of Alpine County
Country United States
State California
RegionSierra Nevada
IncorporatedMarch 16, 1864
Named forIts location in the Sierra Nevada resembling the (Swiss) Alps
County seatMarkleeville
Largest communityAlpine Village
Government
 • TypeCouncil–CAO
 • Body
Board of Supervisors
  • Charles Dobson
  • Evan Mecak
  • Irvin Jim
  • Terry Woodrow
  • David Griffith
 • ChairDavid Griffith
 • Vice ChairEvan Mecak
 • County Executive OfficerSam Booth
Area
 • Total
743 sq mi (1,920 km2)
 • Land738 sq mi (1,910 km2)
 • Water4.8 sq mi (12 km2)
Highest elevation
11,464 ft (3,494 m)
Population
 (2020)
 • Total
1,204
 • Estimate 
(2025)
1,043 Decrease
 • Density1.63/sq mi (0.630/km2)
GDP
 • Total$0.117 billion (2022)
Time zoneUTC−8 (Pacific Standard Time)
 • Summer (DST)UTC−7 (Pacific Daylight Time)
Area codes209, 530
FIPS code06-003
GNIS feature ID1675840
Congressional district3rd
Websitewww.alpinecountyca.gov

Alpine County is a county in the eastern part of the U.S. state of California located within the Sierra Nevada on the state border with Nevada. As of the 2020 census, the population was 1,204, making it California's least populous county. The county seat is Markleeville and the largest community is Alpine Village.