ZIP Code 18104
Allentown · Lehigh, Pennsylvania
18104 is the ZIP code of Allentown in Lehigh, Pennsylvania, United States.
- ZIP Code
- 18104
- County
- Lehigh
- State
- Pennsylvania
- Country
- United States
Place with ZIP code 18104
| Place | County | Location |
|---|---|---|
| Allentown | Lehigh | 40.602, -75.522 |
Near Philadelphia
The nearest major city is Philadelphia, about 78 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 18104?
Allentown.
Which county and state is 18104 in?
Lehigh, Pennsylvania, United States.
What is the nearest major city to 18104?
Philadelphia, about 78 km away.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.