Plumas County, California

Plumas County
Interactive map of Plumas County
Location in the state of California
Country United States
State California
RegionSierra Nevada
IncorporatedMarch 18, 1854
Named afterSpanish words for the Feather River (Río de las Plumas)
County seatQuincy
Largest communityEast Quincy (population)
Warner Valley (area)
Portola (incorporated)
Government
 • TypeCouncil–Administrator
 • ChairMimi Hall
 • Vice ChairKevin Goss
 • Board of Supervisors
Supervisors
  • Dwight Ceresola
  • Kevin Goss
  • Tom McGowan
  • Mimi Hall
  • Jeff Engel
 • County AdministratorDebra Lucero
Area
 • Total
2,613 sq mi (6,770 km2)
 • Land2,553 sq mi (6,610 km2)
 • Water60 sq mi (160 km2)
Highest elevation
8,372 ft (2,552 m)
Population
 • Total
19,790
 • Density7.752/sq mi (2.993/km2)
GDP
 • Total$1.121 billion (2022)
Time zoneUTC-8 (Pacific Standard Time)
 • Summer (DST)UTC-7 (Pacific Daylight Time)
Congressional district3rd
Websitewww.countyofplumas.com

Plumas County (/ˈplməs/ ) is a county located in the Sierra Nevada of the U.S. state of California. As of the 2020 United States census, the population was 19,790. The county seat is Quincy, and the only incorporated city is Portola. The largest community in the county is East Quincy. The county was named for the Spanish Río de las Plumas (the Feather River), which flows through it. It is also the namesake of a native moth species, Hadena plumasata.