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 located in California where the Spanish language is spoken. It is part of Contra Costa County in the San Francisco Bay area and is led by the United States House of Representatives.