South River, New Jersey demographics

South River, NJ demographics: median age 37.0; 27.9% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · South River borough, New Jersey · Incorporated borough · GEOID 3469420. The survey estimates a population of 16,124 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in South River is 37.0 years, with a 90% margin of error of 2.8 years. There are 5,574 households (±300). Age and household distributions show how these totals are composed; they do not establish which neighborhood suits a particular person.

Every count and share is an estimate. “±” is a 90% margin of error (MOE); pp means percentage points. Derived shares use the category count divided by the named universe. Aggregated category MOEs and percentage MOEs are approximate. A margin larger than half its estimate is flagged as low precision. Blank source uncertainty is shown as unavailable, never zero.

Age distribution and sex

City, state and U.S. estimates · ACS 2020–2024
Measure / survey universe	City estimate ± MOE	State estimate ± MOE	U.S. estimate ± MOE
Median age Total population · years	37.0 ±2.8	40.1 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 16,124
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Under 18	4,068 ±634	25.2% ±3.9 pp	21.8%	22.0%
18–34	3,405 ±502	21.1% ±3.1 pp	21.3%	22.8%
35–64	6,496 ±678	40.3% ±4.2 pp	39.7%	38.0%
65 and older	2,155 ±373	13.4% ±2.3 pp	17.2%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 16,124
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Male	8,300 ±402	51.5% ±2.5 pp	49.2%	49.5%
Female	7,824 ±403	48.5% ±2.5 pp	50.8%	50.5%

The age groups are mutually exclusive and cover the entire population. The sex categories follow this ACS table’s published classification; they are not a survey of gender identity.

Race and Hispanic origin

Race · B02001 · ACS 2020–2024 Total population: 16,124
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
White alone	9,158 ±950	56.8% ±5.9 pp	54.0%	61.0%
Black or African American alone	2,372 ±624	14.7% ±3.9 pp	12.8%	12.2%
American Indian and Alaska Native alone	119 ±178 · low precision	0.7% ±1.1 pp · low precision	0.6%	0.9%
Asian alone	679 ±296	4.2% ±1.8 pp	10.1%	6.0%
Native Hawaiian and Other Pacific Islander alone	28 ±47 · low precision	0.2% ±0.3 pp · low precision	0.0%	0.2%
Some other race alone	2,459 ±818	15.3% ±5.1 pp	10.1%	7.1%
Two or more races	1,309 ±455	8.1% ±2.8 pp	12.4%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 16,124
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Not Hispanic or Latino	12,180 ±871	75.5% ±5.4 pp	77.5%	80.7%
Hispanic or Latino	3,944 ±870	24.5% ±5.4 pp	22.5%	19.3%

Hispanic origin and race are separate questions. People of Hispanic or Latino origin may be of any race and appear in both tables. Do not add the Hispanic share to race shares. Race alone and two-or-more-race groups are the mutually exclusive categories of the race table.

Household types, children and living alone

Household types · B11001 · ACS 2020–2024 Households: 5,574
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Married-couple family	3,010 ±359	54.0% ±5.7 pp	49.8%	46.9%
Other family: male householder, no spouse present	284 ±123	5.1% ±2.2 pp	5.1%	5.1%
Other family: female householder, no spouse present	886 ±294	15.9% ±5.2 pp	12.9%	12.2%
Nonfamily: householder living alone	1,039 ±299	18.6% ±5.3 pp	26.4%	28.7%
Nonfamily: householder not living alone	355 ±158	6.4% ±2.8 pp	5.8%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 5,574
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Households with people under 18	2,067 ±250	37.1% ±4.0 pp	31.2%	29.5%
Households without people under 18	3,507 ±450	62.9% ±7.3 pp	68.8%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 5,574
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
One-person nonfamily households	1,039 ±299	18.6% ±5.3 pp	26.4%	28.7%
Two-person households	1,673 ±375	30.0% ±6.5 pp	31.1%	33.8%
Three-person households	950 ±301	17.0% ±5.3 pp	17.1%	15.3%
Four-person households	1,115 ±280	20.0% ±4.9 pp	15.2%	12.6%
Five-person households	487 ±198	8.7% ±3.5 pp	6.3%	5.9%
Six-person households	204 ±153 · low precision	3.7% ±2.7 pp · low precision	2.3%	2.2%
Seven or more people	106 ±71 · low precision	1.9% ±1.3 pp · low precision	1.6%	1.4%

A family household contains related people under the Census definition. A nonfamily household can contain one person or unrelated people sharing a home. Households with children can also appear in the household-type and size tables, so those tables must not be added together. Household estimates exclude people living in group quarters from the household universe.

Nativity and languages spoken at home

Nativity · B05002 · ACS 2020–2024 Total population: 16,124
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Native	11,872 ±695	73.6% ±4.3 pp	76.1%	85.9%
Foreign born	4,252 ±694	26.4% ±4.3 pp	23.9%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 15,019
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
English only	8,641 ±993	57.5% ±6.5 pp	66.9%	77.7%
Spanish	2,531 ±710	16.9% ±4.7 pp	17.2%	13.6%
French, Haitian, or Cajun	6 ±10 · low precision	0.0% ±0.1 pp · low precision	1.1%	0.7%
German or other West Germanic	0 ±22 · low precision	0.0% ±0.1 pp · low precision	0.4%	0.5%
Russian, Polish, or other Slavic	910 ±412	6.1% ±2.7 pp	1.7%	0.7%
Other Indo-European	2,176 ±693	14.5% ±4.6 pp	5.6%	2.0%
Korean	0 ±22 · low precision	0.0% ±0.1 pp · low precision	0.9%	0.3%
Chinese, including Mandarin and Cantonese	195 ±256 · low precision	1.3% ±1.7 pp · low precision	1.5%	1.1%
Vietnamese	0 ±22 · low precision	0.0% ±0.1 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	215 ±146 · low precision	1.4% ±1.0 pp · low precision	0.9%	0.6%
Other Asian and Pacific Island	2 ±4 · low precision	0.0% ±0.0 pp · low precision	1.6%	1.1%
Arabic	183 ±135 · low precision	1.2% ±0.9 pp · low precision	0.9%	0.5%
Other and unspecified	160 ±148 · low precision	1.1% ±1.0 pp · low precision	1.1%	0.8%

Foreign born means not a U.S. citizen at birth; it includes naturalized citizens. Language categories describe speech at home among people age five and older. A language other than English at home does not establish that someone cannot speak English. This city page uses the published C16001 summary categories because the more detailed B16001 table does not provide these city records in this release.

Educational attainment

Highest completed education · B15003 · ACS 2020–2024 Population age 25 and older: 11,038
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Less than high school graduate	1,341 ±319	12.1% ±2.8 pp	9.3%	10.4%
High school graduate or equivalency	3,686 ±561	33.4% ±4.8 pp	25.3%	26.0%
Some college, no degree	1,857 ±353	16.8% ±3.1 pp	15.0%	19.1%
Associate’s degree	1,072 ±274	9.7% ±2.4 pp	6.7%	8.8%
Bachelor’s degree	1,876 ±366	17.0% ±3.2 pp	26.1%	21.6%
Graduate or professional degree	1,206 ±285	10.9% ±2.5 pp	17.6%	14.1%

The denominator excludes residents under 25. Each person is counted in the highest attainment category they completed. This table does not measure the quality of local schools or the education level of every current student.

Residence one year earlier

Geographic mobility · B07003 · ACS 2020–2024 Population age 1 and older: 15,722
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Same house	13,844 ±957	88.1% ±5.9 pp	90.4%	87.7%
Moved within same county	1,266 ±703 · low precision	8.1% ±4.5 pp · low precision	4.4%	6.3%
Moved from a different county in the same state	312 ±182 · low precision	2.0% ±1.2 pp · low precision	2.5%	3.1%
Moved from a different state	285 ±141	1.8% ±0.9 pp	1.8%	2.3%
Moved from abroad	15 ±21 · low precision	0.1% ±0.1 pp · low precision	0.8%	0.6%

These are respondents’ residence patterns one year before their survey response, pooled across the five-year window. They are not a net migration count for 2025. A person can move to a different house within the same city or county; moves within the same county should not automatically be interpreted as new arrivals to the city.

Health insurance, internet access and veterans

8.2% of South River residents (±2.4 percentage points) had no health insurance coverage when surveyed, compared with 7.5% in New Jersey and 8.4% nationally. 93.4% of households subscribe to broadband of any type, including cellular data plans. A subscription is not the same as available service: the FCC National Broadband Map shows providers at a specific address.

City, state and U.S. shares · ACS 2020–2024
Measure	South River	New Jersey	U.S.	Compared with New Jersey
People without health insurance Civilian noninstitutionalized population	8.2% ±2.4 pp	7.5%	8.4%	Not statistically different
Households with a broadband subscription Households	93.4% ±6.9 pp	92.8%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	3.2% ±1.4 pp	3.7%	6.2%	Not statistically different

Reading and reusing the estimates

The Census table links above lead to the original detailed tables. Counts, source universes and uncertainty are retained in the source observation download for South River . Compare these figures with the same survey window; do not compare one city’s five-year estimate with another city’s annual estimate as though they measured the same period. For methods, see uncertainty and denominator calculations.

Read South River housing and cost context or return to the city profile.