Mamaroneck, New York

1 ZIP code · Eastern time

ZIP codes (largest first)

10543 · 20,989
Population19,826
StateNew York
CountyWestchester County
Time zoneEastern
Land area3.21 sq mi

Area codes in this area

914

These are the area codes that most often serve Mamaroneck (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 Mamaroneck

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