Allentown, Pennsylvania ZIP codes

What is the ZIP code for Allentown, PA?

8 ZIP codes, 18101 to 18195

7 for street addresses · 1 PO Box only

Allentown is in Lehigh County, Pennsylvania. USPS uses 8 ZIP codes for Allentown, 7 of them for street addresses. About 179,222 people live in Allentown ZIP codes; the most populated is 18102 with 51,001 residents. The city is in the Eastern Time zone and uses area codes 484, 610 and 835.

CityAllentown, PA
StatePennsylvania
CountyLehigh County
ZIP codes8 (plus 1 retired)
Population (ZIP areas)about 179,222
Time zoneEastern Time · now
Area codes484, 610, 835

All Allentown ZIP codes

ZIP codeTypePopulationMedian income
18101Standard6,120$44,773
18102Standard51,001$43,085
18103Standard48,746$72,895
18104Standard48,683$94,601
18105PO Box only––
18106Standard6,226$92,813
18109Standard18,446$58,031
18195Standard––

Population and income: U.S. Census Bureau, American Community Survey 5-year estimates. PO Box and single-organization ZIP codes have no residents.

Cities near Allentown

Retired Allentown ZIP codes

No longer in use: 18175.

Questions

What is the ZIP code for Allentown, PA?
Allentown has 8 ZIP codes: 18101, 18102, 18103, 18104, 18105 and 18106 and 2 more. The right one depends on the street address.
How many ZIP codes does Allentown have?
8: 7 standard ZIP codes for street addresses, 1 for PO Boxes only.
Which Allentown ZIP code has the most people?
18102, with about 51,001 residents, followed by 18103 (48,746).
What county is Allentown, PA in?
Allentown ZIP codes are in Lehigh County.
What area code is Allentown, PA?
Allentown uses area codes 484, 610 and 835.