Rancho Dominguez is an unincorporated community in Los Angeles County, California, United States. Rancho Dominguez is located between the cities of Compton, Long Beach and Carson. The communities of unincorporated Rancho Dominguez are: Rancho Dominguez, East Rancho Dominguez, and West Rancho Dominguez. Prior to earlier partitioning, Rancho Dominguez also contained the sites of the cities of Compton, Carson and a portion of North Long Beach.