Plumas County, California

Plumas County: County in the Sierra Nevada, California, United States


Plumas County is a county located in the U.S. state of California. As of the 2010 census, the population was 20,007 and a population density of 3 people per km². After 10 years in 2020 county had an estimated population of 18,967 inhabitants. Its county seat is Quincy. The county was created 169 years ago in 1853.

Plumas County locator map
Location of Plumas County on California map.

Quick Facts about Plumas County

Population : 18,967 (2020)
Country : United States of America
State : California (United States)
Area : 6769 km2
Official name : Plumas County
Water as percent of area : 2.29%
Land as percent of area : 97.71%
Named for : Feather River
Altitude : 4,934 feet / 1504 meters
Capital : Quincy
Establishment : January 01, 1854
Time Zone : America/Los_Angeles
Local time : 01:07:03 (29th November 2023)
Density : 3 Pop. per km² as of 2020
Population growth : -5.48% (2010-2020)
Weather : 27℉ Partly Cloudy then Chance Snow Showers 7-days weather
Seal of Plumas County  California seal image
Seal of Plumas County California
Seal of Plumas County  California seal image


Plumas County is located at 40°0'17"N 120°50'19"W (40.0046800, -120.8386000). It has 6 neighbors: Butte County, Sierra County, Yuba County, Lassen County, Shasta County and Tehama County.

Plumas County map

The largest city of Plumas County is Portola with a population of 1,913. . See all Plumas County cities & populated places.

Plumas County Populated Places

Cities, towns, neighborhoods & other populated places in Plumas County.

City Name Population Title
East Quincy 2,489 Census-designated place in Plumas County, California
Portola 1,913 City in Plumas County, California, United States


Plumas County forecast: A chance of snow showers after 4am. Partly cloudy, with a low around 27. South southeast wind 2 to 6 mph. Chance of precipitation is 30%. more

Plumas County has 6 neighbours.

  • Quincy


According to census records, the population of Plumas County decreased by 5.48% in 10 years.

Year Population % Change Method
2010 20,007 - census
2011 19,719 -1.46% estimation process
2012 19,377 -1.76% estimation process
2013 18,895 -2.55% estimation process
2014 18,622 -1.47% estimation process
2015 18,427 -1.06% estimation process
2016 18,665 1.28% estimation process
2017 18,660 -0.03% estimation process
2018 18,741 0.43% estimation process
2019 18,807 0.35% estimation process
2020 18,967 0.84% estimation process

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People born in Plumas County (3)

People born in Plumas County, including Lawman and later outlaw of the Old West Burt Alvord, benefactor Louise M. Davies, tennis player Alice Marble, .


California Other Counties (more counties)

County Name Population Title
Los Angeles County 9,943,046 County in California, United States of America
Los Angeles 3,970,219 The second most populous city in the United States and the center of the Los Angeles metropolitan area.
San Diego County 3,332,427 San Diego County, founded in 1850, is one of 58 counties in the US state of California.
Orange County 3,166,857 County in California, United States
Riverside County 2,489,188 County in California, United States
San Bernardino County 2,189,183 County in California, United States
Santa Clara County 1,907,105 County in California, United States
Alameda County 1,662,323 County in California, United States
Sacramento County 1,559,146 County in California, United States
San Diego 1,422,420 The eighth most populous city in the United States and the center of the San Diego metropolitan area.
Laguna 1,370,232 A city located in Orange County, California.
Contra Costa County 1,152,333 County in California, United States
San Jose 1,013,616 The tenth most populous city in the United States and the center of the San Jose metropolitan area.
Fresno County 1,000,918 County in California, United States
Kern County 901,362
San Francisco County 866,606 County, coextensive with the city of San Francisco, California, United States