 The Post Office objected to the name "Oro" because a town was already named "Oso" in Washington, so the name was changed to Oroville, in 1909.Passenger train service to Oroville was operated by the Great Northern Railway until July 14, 1953, with freight operations continuing later.Oroville started to become a tourist location; in the mid-2000s, large condo developments were proposed.