Zip Code Listings for Hayward, California The following are the areas codes and zip codes for Hayward, California 94540 (area code: 510)
94541 (area code: 510)
94542 (area code: 510)
94543 (area code: 510)
94544 (area code: 510)
94545 (area code: 510)
94546 (area code: 510)
94552 (area code: 510)
94557 (area code: 510)