Siskiyou County, California

Siskiyou County, California
County of Siskiyou
Images, from top down, left to right: Mount Shasta, the historic West Miner Street in Yreka, Indian Tom Lake, Captain Jack's Stronghold in the Lava Beds National Monument, the McCloud River
Motto: 
"Mountains of Opportunity"
Interactive map of Siskiyou County
Location in the state of California
Coordinates: 41°35′N 122°30′W / 41.583°N 122.500°W / 41.583; -122.500
CountryUnited States
StateCalifornia
RegionShasta Cascade
IncorporatedMarch 22, 1852
Named afterThe Siskiyou Trail
County seatYreka
Largest cityYreka
Government
  TypeCouncil–Administrator
  ChairNancy Ogren
  Vice ChairRay A. Haupt
  Board of Supervisors
Supervisors
  • Jess W. Harris
  • Ed Valenzuela
  • Michael N. Kobseff
  • Nancy Ogren
  • Ray A. Haupt
  County AdministratorTerry Barber
Area
  Total
6,347 sq mi (16,440 km2)
  Land6,278 sq mi (16,260 km2)
  Water69 sq mi (180 km2)
Highest elevation
14,162 ft (4,317 m)
Population
 (2020)
  Total
44,076
  Estimate 
(2024)
42,498
  Density6.9/sq mi (2.7/km2)
GDP
  Total$2.008 billion (2022)
Time zoneUTC−8 (Pacific Time Zone)
  Summer (DST)UTC−7 (Pacific Daylight Time)
Area code530
FIPS code06-093
GNIS feature ID277311
Congressional district1st
Websiteco.siskiyou.ca.us

Siskiyou County (/ˈsɪskjuː/ SISK-yoo) is a county located in the northwestern portion of the U.S. state of California. As of the 2020 census, the population was 44,076. Its county seat is Yreka and its highest point is Mount Shasta. It falls within the Cascadia bioregion.

Siskiyou County is in the Shasta Cascade region along the Oregon border. Because of its outdoor recreation, Mt. Shasta, McCloud River, and Gold Rush-era history, it is an important tourist destination within the state.