Princeton, New Jersey

5 ZIP codes · Eastern time

ZIP codes (largest first)

08540 · 50,38808544 · 4,39208542 · 2,53308541 (PO box)08543 (PO box)
Population30,756
StateNew Jersey
CountyMercer County
Time zoneEastern
Land area17.95 sq mi

Area codes in this area

609640

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

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