ZIP Code 15123
West Mifflin · Allegheny, Pennsylvania
15123 is the ZIP code of West Mifflin in Allegheny, Pennsylvania, United States.
- ZIP Code
- 15123
- County
- Allegheny
- State
- Pennsylvania
- Country
- United States
Place with ZIP code 15123
| Place | County | Location |
|---|---|---|
| West Mifflin | Allegheny | 40.434, -80.025 |
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 15123?
West Mifflin.
Which county and state is 15123 in?
Allegheny, Pennsylvania, United States.
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.