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South Plainfield borough, NJ

ZIP 08820 — People & Community

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Wealthy AreaLow Snow AreaRemote Work Hub

Demographics, education attainment, health access, and community lifestyle

Population & Demographics in 08820

08820 has a population of 39,392 with a median age of 42.6 yrs (50.1% male).

Race & Ethnicity
White
18.6%-70% vs US avg
x
Black
5.2%-58% vs US avg
x
Asian
70.0%+1087% vs US avg
x
Hispanic
3.8%-80% vs US avg
x
Other / Two+
2.3%
x
Age Groups
0–17
24.8%+13% vs US avg
x
18–64
57.2%-7% vs US avg
x
65+
18.0%+10% vs US avg
x
Education
Less than HS
7.0%-37% vs US avg
x
High school
11.3%-57% vs US avg
x
Some college
10.6%-63% vs US avg
x
Bachelor's+
71.1%+111% vs US avg
x
Marital Status
Married
65.5%+36% vs US avg
x
Never married
25.0%-26% vs US avg
x
Divorced
4.2%-60% vs US avg
x
Widowed / Separated
5.3%
x
Diversity Index
47/100

Higher = more diverse (Simpson index from race/ethnicity)

Social & household profile

Poverty, nativity, veterans, disability, family structure, and births (ACS).

Poverty Rate
3.5%-69% vs US avg
x
Foreign Born
29.9%+115% vs US avg
x
Veterans
1.8%-70% vs US avg
x
Disability
7.6%-43% vs US avg
x
Single Parent
3.4%-59% vs US avg
x
Recent Births
35.1%+506% vs US avg
x
Top ancestry
ItalianIrishGerman

Health & Community Indicators in 08820

Poverty Rate
3.5%-69% vs US avg
x
Veterans
1.8%-70% vs US avg
x
Foreign Born
29.9%+115% vs US avg
x
Single Parent
3.4%-59% vs US avg
x
Disability
7.6%-43% vs US avg
x
Uninsured
3.9%-52% vs US avg
x
SNAP Benefits
4.7%-60% vs US avg
x
Private School
1.3%-87% vs US avg
x
Recent Births
35.1%+506% vs US avg
x
Smartphone Only
0.0%
x

People & Community key statistics

Population statistics
Population
Population39,392
Median age42.6
Poverty rate3.5%
Demographics statistics
Demographics
White18.6%
Hispanic3.8%
Black5.2%
Asian70.0%
Foreign-born29.9%