ZIP code · Allentown · Pennsylvania · United States
ZIP code 18101 — Allentown
ZIP code 18101 serves Allentown, Pennsylvania.
- Postal code
- 18101Single source Value from one source, not cross-checked.
- City
- Allentown
- County
- Lehigh
- State
- Pennsylvania
- Country
- United States
- Coordinates
- 40.6026, -75.4691 — precision precise (locality)
View on OpenStreetMap - Population
- 5,789 (ZCTA, ACS 5-year)
- Median household income
- $41,542
- Median age
- 30.3
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · census-acs5. Data generated on 2026-08-21. Methodology · Report an error on this page