Irwin borough, Pennsylvania
Official LSAD Designation: Irwin borough • Census GEOID: 4237208
• Westmoreland County
Irwin borough is an incorporated borough in Westmoreland County, Pennsylvania. According to official records from the Census (2025), Irwin borough had an estimated population of 3,759 residents. Official Census Bureau geographic records classify this community under LSAD designation Irwin borough (GEOID 4237208).
Local Government Administration U.S. Census Bureau GMAF
Borough Of Irwin
Municipal
Official Title:
Mayor
Address:
424 MAIN ST, IRWIN PA 15642-3440
County Of Westmoreland
County
Official Title:
Financial Administration
Address:
2 N MAIN ST, STE 107, GREENSBURG PA 15601
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 3,759 | 2025 |
| Median Household Income | $59,963 | 2020-2024 |
| Median Home Value | $195,500 | 2020-2024 |
| Land Area | 0.84 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).