Red Bluff is a city in and the county seat of Tehama County, California, United States. The population was 14,076 at the 2010 census, up from 13,147 at the 2000 census.
It is located 131 miles north of Sacramento, 31 miles south of Redding, and it is bisected by Interstate 5. Red Bluff is situated on the banks of the upper Sacramento River.
It was originally known as Leodocia, but was renamed to Covertsburg in 1853. It got its current name in 1854. Located at the head of navigation on the Sacramento River the town flourished in the mid to late 19th century as a landing point for miners heading to the Trinity County gold fields and later as a temporary terminus for the Southern Pacific Railroad's northward expansion.