City · Pennsylvania · United States
Irwin, PA — ZIP codes
1 ZIP code · Westmoreland County
- City
- Irwin
- County
- Westmoreland
- State
- Pennsylvania
- Country
- United States
- Postal code
- 15642Single source
- Coordinates
- 40.3191, -79.7205 View on OpenStreetMap
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 15642 | Irwin | Single source |
Sources and verification
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. Last generated : 2026-08-21. Report an error.