Omo Ranch is an unincorporated community in El Dorado County, California. It is located south-southeast of Camino, at an elevation of 3612 feet (1101 m). A post office operated at Omo Ranch from 1888 to 1974. The name Omo comes from a Native American village. References Unincorporated communities in California Unincorporated communities in El Dorado County, California