The 2010 United States Census reported that Plumas County had a population of 20,007. The racial makeup of Plumas County was 17,797 (89.0%) White, 192 (1.0%) African American, 539 (2.7%) Native American, 134 (0.7%) Asian, 18 (0.1%) Pacific Islander, 603 (3.0%) from other races, and 724 (3.6%) from two or more races. Hispanic or Latino of any race were 1,605 persons (8.0%).
In its early history Plumas was a reliable Republican county, voting for that party in every election from 1864 to 1908. Plumas then become one of the most reliably Democratic counties in California, voting for the Democratic candidate for President in thirteen straight elections from 1928 to 1976. The county has voted Republican in every presidential election since 1980, except for 1992 when Bill Clinton won a small plurality.
Plumas County is in California's 1st congressional district, represented by Republican Doug LaMalfa. At the state level, Plumas is in the 1st Senate District, represented by Republican Ted Gaines, and the 1st Assembly District, represented by Republican Brian Dahle.
Gansner Field is a general aviation airport located near Quincy. Rogers Field is located near Chester; in addition to its civil-aviation role it also serves as the Chester Air Attack Base, a logistical & coordination facility for the California Department of Forestry's aerial firefighting (both fixed-wing and helicopter). Resources include fueling, retardant loading, communications, and some quartering for aircrew and ground fire-fighting teams. Nervino Airport is in Beckwourth, east of Portola.
Some of The Royal Norwegian Navy's bases are:
Haakonsvern, Bergen (main base for the navy).
Ramsund, between the towns of Harstad and Narvik (special operations/Marinejegerkommandoen)
Trondenes fort, Harstad (Coastal Ranger Command)
Sortland (Coast Guard Squadron North)
Karljohansvern, Horten (training facility)
1st Mine Clearing Squadron
Oksy class mine hunter (1994)
Alta class mine sweeper (1996):Alta M350
Orkla M353 (Ship sunk on 19 November 2002)
Naval EOD Commando