Rubidoux is a census-designated place and an unincorporated community in Riverside County, California, United States. As of the 2000 census, the population was 29,180. The community's name refers to early European settler Louis Rubidoux. Rubidoux apartments for rent comparison page shows most up to date rent information on Rubidoux apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.