Contra_Costa_County,_California | isPartOf | San_Francisco_Bay_Area Antioch,_California | isPartOf | California Antioch,_California | isPartOf | Contra_Costa_County,_California Antioch,_California | leaderTitle | Mayor California | language | Spanish_language
Antioch, Contra Costa County is part of the San Francisco Bay Area California and it is led by the Mayor. Spanish is also spoken in the state.