FIPS county code: 6013
Port Costa is a small town located in Contra Costa
Clyde, California, located in Contra Costa County
Diablo, California, located in Contra Costa County
North Gate, California, located in Contra Costa County
Norris Canyon is a small city located in Contra Costa
Castle Hill, California, located in Contra Costa County
Alhambra Valley is a beautiful region located in Contra
Acalanes Ridge is a small community located in Contra
Shell Ridge is a beautiful city located in Contra Costa
Knightsen, California, located in Contra Costa County