Oroville is the county seat of Butte County, California. The population was 15,506 at the 2010 census, up from 13,004 at the 2000 census. The Berry Creek Rancheria of Maidu Indians of California is headquartered here.
The town of Gridley was named after its founder and earliest landowner, George W. Gridley. He was born in the state of New York and later moved with his parents to Galena, Illinois. In 1850 (1850 census shows him living in Sacramento without his family), he attempted to drive sheep and cattle across the plains to California. He lost the animals, but arrived safely himself and settled in this area.
Butte County, located in Northern California. Its southern border is approximately 55 miles north of the State’s capital in Sacramento. The county is situated on the eastern side of the Sacramento Valley, extending from the Sacramento River, on its western border, east into the foothills and western slopes of the Sierra Nevada Mountains.