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
The mayor is the leader of Antioch which is in the San Francisco Bay Area in Contra Costa County in California and they Spanish is spoken.