South Plainfield borough, New Jersey
Official LSAD Designation: South Plainfield borough • Census GEOID: 3469390
• Middlesex County
South Plainfield borough is an incorporated borough in Middlesex County, New Jersey. According to official records from the Census (2025), South Plainfield borough had an estimated population of 24,891 residents. Official Census Bureau geographic records classify this community under LSAD designation South Plainfield borough (GEOID 3469390).
Local Government Administration U.S. Census Bureau GMAF
Borough Of South Plainfield
Municipal
Official Title:
Amy Antonides
Address:
2480 PLAINFIELD AVE, SOUTH PLAINFIELD NJ 07080-3596
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 | 24,891 | 2025 |
| Median Household Income | $130,239 | 2020-2024 |
| Median Home Value | $470,900 | 2020-2024 |
| Land Area | 8.30 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).