Prehistoric cultural affiliation(s) include Atsugewi, Northeastern Madiu and Yahi Yana dating back to 500.
Some of the country's most noteable architects helped create the Tehama County places including Swain & Hudson, A.A. Cook, Hirsch & Watson Helfensteller, William Henry Weeks, Alexander A. Cantin, Franklin Pierce Burnham, S.H. Depuy, Mackenzie A. Cantin and William H. Weeks. Prominent architectural styles found in Tehama Country are Classical Revival, Bungalow/Craftsman and Gothic.