South River, New Jersey

Borough in Middlesex County, New Jersey

Population, 2000 to 2020+5.2%

Population of South River at each census
Census	Population
2000	15,322
2010	16,008
2020	16,118

As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.

Sources: Census 2000 Summary File 1: total population, place level, state 34, retrieved November 14, 2026; Census 2010 Summary File 1: total population, place level, state 34, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, place level, state 34, retrieved November 14, 2026.

South River compared with its county and state

South River compared with its county and state, American Community Survey 2019-2023
Measure	South River	Middlesex County	New Jersey
Population	16,007	861,535	9,267,014
Median household income	$101,853	$109,028	$101,050
Median age	36.5	39.4	40.1
Median home value	$382,500	$439,300	$427,600
Bachelor’s degree or higher	31.1%	45.1%	42.9%
Foreign-born residents	24.8%	34.7%	23.5%
Owner-occupied homes	65.7%	63.5%	63.7%
Mean commute to work	32.9 minutes	31.9 minutes	30.9 minutes

Source: American Community Survey 5-year data profile 2019–2023, place level, state 34, retrieved November 14, 2026.

Household income in South River

Under $50k24.2%

$50k to $100k24.2%

$100k to $150k26.1%

$150k to $200k10.6%

$200k and over14.8%

Median household income $101,853 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.

Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, place level, state 34, retrieved November 14, 2026.

Housing tenure in South River

65.7%owner occupied

Owner occupied: 3,659 units
Renter occupied: 1,911 units
Vacancy rate: 3.8%

Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.

Source: American Community Survey 5-year data profile 2019–2023, place level, state 34, retrieved November 14, 2026.

Public schools in South River4

Public schools in South River, NCES directory 2023–2024
School	Type	Grades	District
South River Elementary School	Public	2–5	South River Public School District
South River Primary School	Public	Pre-K–1	South River Public School District
South River Middle School	Public	6–8	South River Public School District
South River High School	Public	9–12	South River Public School District

Open public schools in the NCES directory for 2023–2024, placed by their listed location; private schools are not in the source. Enrollment and ratings are not shown.

Sources: NCES Common Core of Data, public school directory 2023–2024, retrieved November 14, 2026; NCES EDGE public school geocodes 2024–2025, retrieved November 14, 2026.