ZIP Code 94509
Antioch, California · Contra Costa County
No39921
Zip94509
TypeSTANDARD
Decommissioned0
Primary CityAntioch
Acceptable Cities—
Unacceptable Cities—
StateCA
LstateCalifornia
CountyContra Costa County
TimezoneAmerica/Los_Angeles
Area Codes925
World RegionNA
CountryUS
Latitude37,99
Longitude-121,81