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 FIPS 42077
- State
- Pennsylvania
- Country
- United States
- Coordinates
- 40.6026, -75.4691 — precision precise (locality)
View on OpenStreetMap - Population
- 5,789 (ZCTA, ACS 5-year)
- Population density
- 18,742 / sq mi
- Land area
- 0.3 sq mi (0.8 km²) (ZCTA, ACS 5-year)
- Median household income
- $41,542
- Per-capita income
- $27,599
- Median age
- 30.3
- Households
- 2,428
- Housing units
- 2,686
- Median home value
- $153,800
- Median gross rent
- $1,337 / month
- Congressional district
- PA-7 (119th Congress)
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
Tools: compare 18101 with another ZIP · ZIPs within 25 miles · distance from 18101
Map of ZIP code 18101
Climate — monthly normals
Warmest month Jul (avg high 86°F), coldest Jan (avg low 22°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 38 | 42 | 51 | 63 | 74 | 82 | 86 | 84 | 77 | 66 | 54 | 43 |
| Avg low °F | 22 | 23 | 31 | 40 | 51 | 60 | 65 | 63 | 55 | 44 | 34 | 27 |
| Precip in | 3.3 | 2.8 | 3.6 | 3.7 | 3.6 | 4.4 | 5.3 | 4.6 | 4.8 | 4.1 | 3.2 | 3.9 |
NOAA 1991–2020 climate normals from the nearest station: ALLENTOWN INTL AP (3.5 mi) · NOAA NCEI
Places in ZIP 18101
- 2 schools
- 1 colleges & universities
- 1 hospitals & clinics
- 29 restaurants & cafés
- 4 bars & pubs
- 5 parks
- 1 playgrounds
- 1 gyms & sports centres
- 1 post offices
- 8 places of worship
- 3 banks
- 5 EV charging stations
- 3 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
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 · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI. Data generated on 2026-08-21. Methodology · Report an error on this page