ZIP Code 94546
Castro Valley, California · Alameda County
No39957
Zip94546
TypeSTANDARD
Decommissioned0
Primary CityCastro Valley
Acceptable CitiesHayward
Unacceptable Cities—
StateCA
LstateCalifornia
CountyAlameda County
TimezoneAmerica/Los_Angeles
Area Codes341, 510, 925
World RegionNA
CountryUS
Latitude37,7
Longitude-122,08