South Plainfield, New Jersey
South Plainfield, New Jersey | |
|---|---|
Cedar Brook Park, spanning South Plainfield in Middlesex County and its Union County neighbor Plainfield | |
| Motto: Vision – Family – Industry | |
Location of South Plainfield in Middlesex County highlighted in red (left). Inset map: Location of Middlesex County in New Jersey highlighted in orange (right). | |
Census Bureau map of South Plainfield, New Jersey | |
Location in Middlesex County Location in New Jersey | |
| Coordinates: 40°34′28″N 74°24′53″W / 40.574413°N 74.4148°W | |
| Country | United States |
| State | New Jersey |
| County | Middlesex |
| Incorporated | April 6, 1926 |
| Government | |
| • Type | Borough |
| • Body | Borough Council |
| • Mayor | Matthew P. Anesh (R, term ends December 31, 2026) |
| • Administrator | Glenn Cullen |
| • Municipal clerk | Amy L. Antonides |
| Area | |
• Total | 8.33 sq mi (21.58 km2) |
| • Land | 8.30 sq mi (21.49 km2) |
| • Water | 0.04 sq mi (0.09 km2) 0.42% |
| • Rank | 228th of 565 in state 12th of 25 in county |
| Elevation | 82 ft (25 m) |
| Population (2020) | |
• Total | 24,338 |
• Estimate (2023) | 24,131 |
| • Rank | 108th of 565 in state 13th of 25 in county |
| • Density | 2,933.7/sq mi (1,132.7/km2) |
| • Rank | 221st of 565 in state 18th of 25 in county |
| Time zone | UTC−05:00 (Eastern (EST)) |
| • Summer (DST) | UTC−04:00 (Eastern (EDT)) |
| ZIP Code | 07080 |
| Area code | 908 |
| FIPS code | 3402369390 |
| GNIS feature ID | 0885402 |
| Website | www |
South Plainfield is a borough in northern Middlesex County, in the U.S. state of New Jersey. The borough is situated on the border with Union County in the Raritan Valley region, within the New York metropolitan area. As of the 2020 United States census, the borough's population was 24,338, its highest decennial count ever and an increase of 953 (+4.1%) from the 23,385 recorded at the 2010 census, which in turn reflected an increase of 1,575 (+7.2%) from the 21,810 counted in the 2000 census.
South Plainfield was incorporated by an act of the New Jersey Legislature on March 12, 1926, from portions of Piscataway, based on the results of a referendum passed on April 6, 1926. The borough's name derives from Plainfield, which derived its name from a local estate or from its scenic location.