Tehama County (/təˈheɪmə/ tə-hay-mə) is a county located in the northern part of the U.S. state of California. As of the 2010 census, the population was 63,463. The county seat and largest city is Red Bluff.
Tehama County comprises the Red Bluff, CA Micropolitan Statistical Area, which is also included in the Redding-Red Bluff, CA Combined Statistical Area. The county is bisected by the Sacramento River.