West Middlesex borough, Pennsylvania
Official LSAD Designation: West Middlesex borough • Census GEOID: 4283496
• Mercer County
West Middlesex borough is an incorporated borough in Mercer County, Pennsylvania. According to official records from the Census (2025), West Middlesex borough had an estimated population of 772 residents. Official Census Bureau geographic records classify this community under LSAD designation West Middlesex borough (GEOID 4283496).
Local Government Administration U.S. Census Bureau GMAF
Borough Of West Middlesex
Municipal
Official Title:
Mayor
Address:
PO BOX 582, WEST MIDDLESEX PA 16159-0582
County Of Mercer
County
Official Title:
Chief Clerk
Address:
103 COURT HOUSE, MERCER PA 16137-1224
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 772 | 2025 |
| Median Household Income | $89,667 | 2020-2024 |
| Median Home Value | $158,100 | 2020-2024 |
| Land Area | 0.85 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).