Yreka (/waɪˈriːkə/ wy-REE-kə) is the county seat of Siskiyou County, California, United States, near the Shasta River; the city has an area of about 10 square miles (26 km2), most of it land. As of the 2020 United States Census, the population was 7,807, reflecting a meager increase from 7,765 counted in the 2010 Census. Yreka is home to the College of the Siskiyous, Klamath National Forest Interpretive Museum and the Siskiyou County Museum.