Contra_Costa_County,_California | isPartOf | San_Francisco_Bay_Area Antioch,_California | isPartOf | California Antioch,_California | isPartOf | Contra_Costa_County,_California Antioch,_California | leaderTitle | United_States_House_of_Representatives California | language | Spanish_language
Antioch, is part of Contra Costa County, which in turn, is part of the San Francisco Bay Area, in California, where Spanish is spoken. the United States House of Representatives, is the leader title of Antioch.