Hayward, California

7 ZIP codes · Pacific time

ZIP codes (largest first)

94544 · 76,94794541 · 67,13994545 · 32,84394542 · 14,87194540 (PO box)94543 (PO box)94557 (PO box)
Population158,801
StateCalifornia
CountyAlameda County
Time zonePacific
Land area45.82 sq mi

Area codes in this area

341510925

These are the area codes that most often serve Hayward (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Find the ZIP+4 for an address in Hayward

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Population: U.S. Census Bureau, ACS 5-year estimates, 2024.