where is moraga ca
Moraga, California. Moraga (incorporating the former communities of Moraga Town, Rheem, and Rheem Valley) is a suburban incorporated town located in Contra Costa County, California, United States, in the San Francisco Bay Area. It is named in honor of Joaquin Moraga, whose grandfather was JosÃ© Joaquin Moraga, second in command to Juan Bautista de Anza.