Middlesex County · Borough guide

South Plainfield

South Plainfield blends established residential neighborhoods with major business and retail corridors, a substantial local dining scene, county parkland and quick access to I-287. The borough is marking its 100th anniversary in 2026, a milestone that adds extra community events and historical interest to this year's guide.

South Plainfield borders Piscataway and Edison in Middlesex County and Plainfield and Scotch Plains in Union County, so NJTGO keeps listings tied to the borough itself rather than folding in similarly named or nearby places.

South Plainfield at a glance

24,3382020 CensusOfficial U.S. Census count for the borough.
24,8912025 estimateLatest completed Census population estimate available in 2026.
100Years in 2026South Plainfield was incorporated March 10, 1926.
127Acres at Spring Lake ParkMiddlesex County park with a five-acre lake.

Start with local resources

Parks, recreation & local places

South Plainfield has a mix of borough recreation areas and a major Middlesex County park within the community.

Spring Lake Park

127-acre Middlesex County park centered on a five-acre lake, with walking and biking paths, fishing, courts, a gazebo and performance stage.

Highland Woods

Local nature-preserve area used for woodland trails, nature study and passive recreation.

Putnam Park & Centennial Square

Community park connected with South Plainfield's 2026 centennial commemoration.

Monument Park

A local civic and memorial space recognized among the borough's community landmarks.

Borough recreation

Youth programs, summer activities, sports and seasonal recreation are coordinated through the borough.

Community events

Municipal celebrations, recreation programs, concerts and centennial activities add year-round reasons to check the borough calendar.

Spring Lake Park detailsBorough recreation & calendar

Schools

Franklin Elementary School

South Plainfield district elementary school.

Kennedy Elementary School

South Plainfield district elementary school.

Riley Elementary School

South Plainfield district elementary school.

Roosevelt Elementary School

South Plainfield district elementary school.

Grant School

District school serving the borough.

South Plainfield Middle School

District middle school.

South Plainfield High School

Public high school serving the borough.

Preschool programs

District preschool programming is included in the South Plainfield school system.

South Plainfield in 2026

South Plainfield was incorporated on March 10, 1926. The borough's centennial year includes commemorative activities and places a spotlight on community history, including its role as a Revolutionary-era crossroads and its aviation, industrial and recreation heritage.

Centennial year

March 10, 2026 marked the borough's 100th anniversary.

Local history

The South Plainfield Historical Society and community collections help document the borough's development.

Business crossroads

Hadley/Stelton, Oak Tree Avenue, Park Avenue and Hamilton Boulevard are important commercial and service corridors.

Municipal essentials

Municipal Building

2480 Plainfield Avenue · South Plainfield, NJ 07080 · 908-754-9000.

South Plainfield Public Library

2484 Plainfield Avenue · 908-754-7885.

South Plainfield School District

125 Jackson Avenue · 908-754-4620.

Explore South Plainfield

Continue into the deep local business, dining, real estate, visitor, classifieds and jobs pages.

Business & ShoppingFood & DrinkVisiting & Lodging

Local information reviewed September 16, 2026. Confirm time-sensitive details directly with the organization.