About South Plainfield

South Plainfield is a Borough in Middlesex County, New Jersey, United States. As of the 2010 United States Census, the borough population was 23,385, reflecting an increase of 1,575 (+7.2%) from the 21,810 counted in the 2000 Census, which had in turn increased by 1,321 (+6.4%) from the 20,489 counted in the 1990 Census.

South Plainfield was incorporated by an Act of the New Jersey Legislature on March 10, 1926, from portions of Piscataway Township, based on the results of a referendum passed on April 6, 1926.


South Plainfield is located at 40°34?28?N 74°24?53?W (40.574413,-74.4148). According to the United States Census Bureau, the borough had a total area of 8.361 square miles (21.653 km2), of which, 8.327 square miles (21.566 km2) of it is land and 0.034 square miles (0.087 km2) of it (0.40%) is water.

South Plainfield is bordered by Piscataway Township on the south and west, Edison on the east, and Plainfield on the north.


As of the 2010 United States Census, there were 23,385 people, 7,876 households, and 6,175 families residing in the borough. The population density was 2,808.5 inhabitants per square mile (1,084.4 /km2). There were 8,093 housing units at an average density of 971.9 per square mile (375.3 /km2). The racial makeup of the borough was 66.74% (15,607) White, 10.10% (2,361) African American, 0.37% (87) Native American, 14.68% (3,433) Asian, 0.03% (8) Pacific Islander, 4.79% (1,120) from other races, and 3.29% (769) from two or more races. Hispanic or Latino of any race were 13.24% (3,097) of the population.

There were 7,876 households out of which 35.2% had children under the age of 18 living with them, 62.1% were married couples living together, 12.3% had a female householder with no husband present, and 21.6% were non-families. 18.2% of all households were made up of individuals and 8.2% had someone living alone who was 65 years of age or older. The average household size was 2.93 and the average family size was 3.34.

In the borough the age distribution of the population shows 23.0% under the age of 18, 8.0% from 18 to 24, 26.2% from 25 to 44, 29.2% from 45 to 64, and 13.5% who were 65 years of age or older. The median age was 40.2 years. For every 100 females there were 94.4 males. For every 100 females age 18 and over, there were 92.1 males.

The Census Bureau’s 2006-2010 American Community Survey showed that (in 2010 inflation-adjusted dollars) median household income was $92,263 (with a margin of error of +/- $5,066) and the median family income was $98,913 (+/- $4,289). Males had a median income of $61,480 (+/- $7,597) versus $48,639 (+/- $4,924) for females. The per capita income for the borough was $33,495 (+/- $1,546). About 2.7% of families and 4.0% of the population were below the poverty line, including 3.9% of those under age 18 and 2.5% of those age 65 or over.


The South Plainfield Public Schools serve students in prekindergarten through twelfth grade. The schools in the district (with 2009-10 enrollment data from the National Center for Education Statistics) are:

  • Roosevelt Preschool (PreK; 36 students) for PreK
  • Four elementary schools:
    1. Franklin Elementary School (grades K-4; 332 students)
    2. John F. Kennedy Elementary School (K-4; 270)
    3. John E. Riley Elementary School (K-4; 323) and
    4. Roosevelt Elementary School (PreK-4; 409)
  • Grant School (5-6; 555)
  • South Plainfield Middle School (7-8; 581) and
  • South Plainfield High School (9-12; 1,221).

Holy Savior Academy (PreK-8) operates under the supervision of Roman Catholic Diocese of Metuchen.

Al-Minhaal Academy is a private Islamic School in South Plainfield.

Police Department

The South Plainfield Police Department is issued FCC call sign WNWN473 for use on 453.32500 MHz and 458.32500 MHz for public safety use.

Related Links

http://www.southplainfieldnj.com – South Plainfield Home Page
http://www.spboe.org – South Plainfield Board of Education
http://www.bestplaces.net – See how South Plainfield ranks
http://www.loopnet.com – Commercial Lease Properties in South Plainfield
www.nj.gov/njbusiness/bac – NJ Business Action Center

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