South River, NJ Demographics

A map of South River's Population by Race

South River, New Jersey has an estimated population of 16,124, a less than 1% change from the 16,118 recorded in the 2020 Census. The population is 52.8% White, 24.5% Hispanic, 13.5% Black, 4.0% Asian, 2.7% Native American/Other, and 2.6% Multiracial. This demographic dot map shows the population of South River, with one dot drawn for each person counted by the Census, color-coded by race.

South River has become more racially diverse since the 2020 Census. It is less diverse than New Jersey overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In South River, that probability was 62.4% in 2020 and 64.0% in the most recent ACS estimates.

South River is ranked the 73rd most populous place in New Jersey, out of 700 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). South River was ranked the 73rd most populous place in the 2020 Census.

South River's White Population

8,518 residents of South River, or 52.8% of the population, identify as White. The share of White residents in South River is comparable to the share in New Jersey overall, where 50.9% of the population is White. South River ranks 539th statewide in terms of White residents as a share of the population, out of 700 places.

Since the 2020 Census, South River's White population has declined by an estimated 3.2%. White residents' share of South River's population has decreased from 54.6% to 52.8%.

South River is more White than neighboring Sayreville (46.9% White). South River is less White than neighboring Spotswood (74.3% White), Milltown (78.1% White), Old Bridge (61.8% White), and Highland Park (55.1% White).

South River's Black Population

2,171 residents of South River, or 13.5% of the population, identify as Black. The share of Black residents in South River is comparable to the share in New Jersey overall, where 12.2% of the population is Black. South River ranks 201st statewide in terms of Black residents as a share of the population, out of 700 places.

Since the 2020 Census, South River's Black population has grown by an estimated 117.1%. Black residents' share of South River's population has increased from 6.2% to 13.5%.

South River is more Black than neighboring Spotswood (1.5% Black), Milltown (2.7% Black), Sayreville (11.5% Black), Old Bridge (5.6% Black), and Highland Park (3.6% Black).

South River's Asian Population

638 residents of South River, or 4.0% of the population, identify as Asian. The share of Asian residents in South River is lower than in New Jersey overall, where 10% of the population is Asian. South River ranks 261st statewide in terms of Asian residents as a share of the population, out of 700 places.

Since the 2020 Census, South River's Asian population has declined by an estimated 22.8%. Asian residents' share of South River's population has decreased from 5.1% to 4.0%.

South River is more Asian than neighboring Milltown (3.6% Asian). South River is less Asian than neighboring Spotswood (6.6% Asian), Sayreville (16.1% Asian), Old Bridge (13.1% Asian), and Highland Park (21.1% Asian).

South River's Hispanic Population

3,944 residents of South River, or 24.5% of the population, identify as Hispanic. The share of Hispanic residents in South River is comparable to the share in New Jersey overall, where 22.5% of the population is Hispanic. South River ranks 86th statewide in terms of Hispanic residents as a share of the population, out of 700 places.

Since the 2020 Census, South River's Hispanic population has declined by an estimated 6.1%. Hispanic residents' share of South River's population has decreased from 26.0% to 24.5%.

South River is more Hispanic than neighboring Spotswood (14.9% Hispanic), Milltown (11.3% Hispanic), Sayreville (21.2% Hispanic), Old Bridge (16.2% Hispanic), and Highland Park (15.8% Hispanic).

South River's Native American/Other Population

440 residents of South River, or 2.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in South River is comparable to the share in New Jersey overall, where 0.9% of the population is Native American/Other. South River ranks 17th statewide in terms of Native American/Other residents as a share of the population, out of 700 places.

Since the 2020 Census, South River's Native American/Other population has declined by an estimated 1.1%. Native American/Other residents' share of South River's population has remained roughly unchanged at 2.7%.

South River is more Native American/Other than neighboring Spotswood (0.4% Native American/Other), Milltown (0.1% Native American/Other), Sayreville (1.1% Native American/Other), Old Bridge (0.3% Native American/Other), and Highland Park (1% Native American/Other).

South River's Multiracial Population

413 residents of South River, or 2.6% of the population, identify as Multiracial. The share of Multiracial residents in South River is comparable to the share in New Jersey overall, where 3.5% of the population is Multiracial. South River ranks 57th statewide in terms of Multiracial residents as a share of the population, out of 700 places.

Since the 2020 Census, South River's Multiracial population has declined by an estimated 51.1%. Multiracial residents' share of South River's population has decreased from 5.2% to 2.6%.

South River is more Multiracial than neighboring Spotswood (2.2% Multiracial). South River is less Multiracial than neighboring Milltown (4.2% Multiracial), Sayreville (3.2% Multiracial), Old Bridge (3.1% Multiracial), and Highland Park (3.5% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.