Moraga is a town in Contra Costa County, California, in the San Francisco Bay Area. The town is named in honor of Joaquín Moraga, member of the famed Californio family, son of Gabriel Moraga, and grandson of José Joaquín Moraga, famous 18th century expeditionaries of Alta California. As of 2010, Moraga had a total population of 16,016 people. Moraga is the home of Saint Mary's College of California.
The land now called Moraga was first inhabited by the Saklan Native Americans who belonged to the Bay Miwok language group.
Joaquin Moraga was the grandson of José Joaquín Moraga, builder of the Presidio of San Francisco and founder of the pueblo that grew into the city of San Jose. Joaquin's father Tenzin Moraga was also a soldier, and an early explorer who named many of the state's rivers, including the Sacramento and San Joaquin.
Moraga is located on the 1835 Mexican Land Grant Rancho Laguna de Los Palos Colorados given to Joaquin Moraga and his cousin, Juan Bernal. Part of that grant was the property today known as Moraga Ranch. The Moraga Adobe has been preserved and is located in neighboring Orinda. Joaquin Moraga Intermediate School, a middle school in Moraga, bears his name.