Explore Moraga local geography, civic resources and voter guides, with dated official population and registration facts for Contra Costa County.
At a glance: Moraga is an incorporated city in Contra Costa County. Population: 16,662 (California Department of Finance estimate as of January 1, 2026). Registered voters: 11,570 (California Secretary of State, as of September 4, 2026).
Moraga occupies an inland bowl of valleys and grassy ridges south of Lafayette and Orinda. Saint Mary's College and residential neighborhoods share a landscape shaped by creeks, hillsides, and a relatively compact network of connecting roads. Moraga Commons Park brings together a bandshell, picnic areas, playgrounds, bocce, disc golf, and a skatepark. Hacienda de las Flores provides another community setting and houses the town's parks-and-recreation office. Moraga incorporated on November 12, 1974. Officially the Town of Moraga, it is a general-law municipality using council-manager government and a town manager.
The town lists its street address as 1425 St. Mary's Road.
Yes. The town publishes separate reservation applications and availability information for designated facilities.
No. Moraga is incorporated and has its own municipal council and administration.
11,570 (California Secretary of State, as of September 4, 2026).
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