South Williamsport borough, Pennsylvania
Official LSAD Designation: South Williamsport borough • Census GEOID: 4272648
• Lycoming County
South Williamsport borough is an incorporated borough in Lycoming County, Pennsylvania. According to official records from the Census (2025), South Williamsport borough had an estimated population of 6,124 residents. Official Census Bureau geographic records classify this community under LSAD designation South Williamsport borough (GEOID 4272648).
Local Government Administration U.S. Census Bureau GMAF
Borough Of South Williamsport
Municipal
Official Title:
Building Administration Sec
Address:
329 W SOUTHERN AVE, SOUTH WILLIAMSPORT PA 17702-7244
County Of Lycoming
County
Official Title:
Chairperson
Address:
48 W 3RD ST, WILLIAMSPORT PA 17701-6536
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 6,124 | 2025 |
| Median Household Income | $64,583 | 2020-2024 |
| Median Home Value | $180,800 | 2020-2024 |
| Land Area | 1.90 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).