West Mifflin borough, Pennsylvania
Official LSAD Designation: West Mifflin borough • Census GEOID: 4283512
• Allegheny County
West Mifflin borough is an incorporated borough in Allegheny County, Pennsylvania. According to official records from the Census (2025), West Mifflin borough had an estimated population of 18,707 residents. Official Census Bureau geographic records classify this community under LSAD designation West Mifflin borough (GEOID 4283512).
Local Government Administration U.S. Census Bureau GMAF
Borough Of West Mifflin
Municipal
Official Title:
Borough Manager
Address:
1020 LEBANON ROAD, WEST MIFFLIN PA 15122
County Of Allegheny
County
Official Title:
Office Of The Allegheny County Executive
Address:
RM 101 ALLEGHENY COUNTY COURTHOUSE, 436 GRANT ST, PITTSBURGH PA 15219
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 18,707 | 2025 |
| Median Household Income | $76,563 | 2020-2024 |
| Median Home Value | $151,600 | 2020-2024 |
| Land Area | 14.22 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).