Richvale (also, Richland, Silbys Switch, Silsby) is a small census-designated place (population 234) in Butte County, California, US, south of Chico and west of Oroville. The primary crop grown in the area surrounding Richvale is rice, irrigated from the Oroville Dam on the Feather River. Several farmers in the area are known for organic farming. The population was 234 at the 2020 census.