Allentown, Pennsylvania

8 ZIP codes · Eastern time

ZIP codes (largest first)

18102 · 51,00118103 · 48,74618104 · 48,68318109 · 18,44618106 · 6,22618101 · 6,12018105 (PO box)18195
Population125,976
StatePennsylvania
CountyLehigh County
Time zoneEastern
Land area17.56 sq mi

Area codes in this area

484610835

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

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