South Plainfield, New Jersey Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of South Plainfield, New Jersey is 24,231 as of the 2023 American Community Survey, making it the 43rd-largest city in New Jersey. The median household income is $126,063, the median home value is $443,900, and the median age is 41.7.
The population has grown 7.2% since 2010 (23,383 → 25,062).
24,231
Population
2921
People / sq mi
$126,063
Median Income
$443,900
Median Home Value
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South Plainfield covers 8.3 sq mi of land at 2921 people per square mile.
About South Plainfield, NJ
Homeownership is the standout figure in South Plainfield: 85.2% of homes are owner-occupied, higher than the national rate. With 24,231 residents, South Plainfield is a city in New Jersey. It ranks #43 among cities in New Jersey by population.
The typical household earns $126,063 a year, above the US median of $78,538. Only 3.0% of residents live in poverty, below the national 12.4%. Home values run above average at $443,900, with typical rent around $1,928.
Degree attainment is mid-range for US cities: 42.0% of adults hold a four-year degree, above the national 35.0%. About 12.3% of the workforce is home-based, below the national 14.0%, and the average commute runs about 28 minutes each way.
The ownership rate anchors the housing story in South Plainfield, and tends to move with the age structure and home-value figures above.
South Plainfield borough Population History (2010-2024)
The city of South Plainfield borough had a population of 23,383 in 2010 and 25,062 in 2024, a 7.2% growth over 14 years. The peak was 25,062 in 2024. Average annual growth rate: 0.50%.
25,062
Population (2024)
23,383
Population (2010)
25,062
Peak (2024)
0.50%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 23,383 |
| 2011 | 23,440 |
| 2012 | 23,555 |
| 2013 | 23,573 |
| 2014 | 23,635 |
| 2015 | 23,842 |
| 2016 | 23,867 |
| 2017 | 23,965 |
| 2018 | 24,024 |
| 2019 | 24,052 |
| 2020 | 24,283 |
| 2021 | 24,297 |
| 2022 | 24,287 |
| 2023 | 24,484 |
| 2024 | 25,062 |
Race & Ethnicity
| White | 55.0% |
| Black or African American | 11.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.2% |
| Two or More Races | 0.0% |
Economy & Income
$126,063
Median Household Income
$49,533
Per Capita Income
3.0%
Poverty Rate
5.0%
Unemployment Rate
Housing
$443,900
Median Home Value
$1,928
Median Rent
85.2%
Owner-Occupied
Education
92.5%
High School+
42.0%
Bachelor's+
Commute
2.1%
Drive Alone
75.6%
Public Transit
12.3%
Work From Home
28.0 min
Avg Commute
Community Profile
15.2%
Foreign Born
67.4%
Non-English at Home
3.2%
Veterans
10.0%
With Disability
96.7%
Health Insurance
95.8%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 24.3% |
| Finance, Insurance & Real Estate | 13.2% |
| Manufacturing | 10.1% |
| Retail Trade | 8.4% |
| Public Administration | 7.9% |
| Information | 7.9% |
| Construction | 5.8% |
| Education, Health Care & Social Services | 3.9% |
| Arts, Entertainment & Food Services | 3.9% |
| Transportation & Warehousing | 2.2% |
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City rankings
Frequently Asked Questions
South Plainfield, New Jersey has a population of 24,231 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 43rd-largest city in New Jersey.
The median household income in South Plainfield, New Jersey is $126,063, with 3.0% of residents living below the federal poverty level.
The median home value in South Plainfield, New Jersey is $443,900, with median monthly rent at $1,928 and a homeownership rate of 85.2%.
The median age in South Plainfield, New Jersey is 41.7 years. The population is 49.6% male and 50.4% female.
The population has grown 7.2% since 2010 (23,383 → 25,062).
Where to stay in South Plainfield
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.