Contra_Costa_County,_California | isPartOf | San_Francisco_Bay_Area Antioch,_California | isPartOf | California California | language | English_language Antioch,_California | isPartOf | Contra_Costa_County,_California Antioch,_California | leaderTitle | United_States_House_of_Representatives
Antioch, is part of Contra Costa County in the San Francisco Bay area, in California and it is led by the United States House of Representatives. The English language is spoken in this state.