Yreka (/waɪˈriːkə/ wy-REE-kə) is the county seat of Siskiyou County, California, United States, located in the Shasta Valley at 2,500 feet (760 m) above sea level and covering about 10.1 sq mi (26 km2) area, of which most is land. The population was 7,765 at the 2010 census, up from 7,290 at the 2000 census. Yreka is home to the College of the Siskiyous, Klamath National Forest Interpretive Museum and the Siskiyou County Museum.