Richvale (also, Richland, Silbys Switch, Silsby) is a small census-designated place (population 244) in Butte County, California, USA, 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 244 at the 2010 census.