Demographics & People — South Plainfield, New Jersey

Population Overview

Population (Census)24,231
Estimated 2026~25,000
Median Age41.7
Total Households8,280
Family Households6,751
Average Household Size2.89
Diversity Index0.6298 (highly diverse)

Race & Ethnicity

White13,316
Black or African American2,655
Asian3,879
Hispanic or Latino4,517

Heritage & Ancestry

GroupCount
Other groups9,338
Italian4,590
Hispanic: Hispanic or Latino4,476
Unclassified or not reported3,847
Irish2,853
German2,295
Polish1,877
Hispanic: South American1,414
Hispanic: Puerto Rican1,186
Hispanic: Central American820

Language

English Only15,206
Spanish2,884
Population 5+22,577

Veterans

Veterans725
Population 18+19,402

Commuting

Mean Commute Time29.7 minutes
Work from Home16.4%
Commuter ProfileN/A
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for South Plainfield, New Jersey.