South River borough, New Jersey
Official LSAD Designation: South River borough • Census GEOID: 3469420
• Middlesex County
South River borough is an incorporated borough in Middlesex County, New Jersey. According to official records from the Census (2025), South River borough had an estimated population of 16,262 residents. Official Census Bureau geographic records classify this community under LSAD designation South River borough (GEOID 3469420).
Local Government Administration U.S. Census Bureau GMAF
Borough Of South River
Municipal
Official Title:
Chief Financial Officer
Address:
48 WASHINGTON ST, SOUTH RIVER NJ 08882-1247
County Of Middlesex
County
Official Title:
Director
Address:
75 BAYARD ST, NEW BRUNSWICK NJ 08901-2112
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 16,262 | 2025 |
| Median Household Income | $96,147 | 2020-2024 |
| Median Home Value | $405,200 | 2020-2024 |
| Land Area | 2.78 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).