South Plainfield

Population: 24,231
Median household income: $126,063
Median home value: $443,900

South Plainfield, a community in Middlesex County, New Jersey, has 24,231 residents. Its median household income of $126,063 runs above the Middlesex County figure of $109,028.

Between 2019 and 2023, South Plainfield's population grew 1.1% from 23,956 to 24,231, while its median home value rose 30.5% from $340,200 to $443,900.

75.6% of workers drive to work alone. 78.7% of homes are single-family detached houses.

Demographics

ACS 2019–2023

Population: 24,231
Median age: 41.7 yrs
Median household income: $126,063
Median home value: $443,900
Median gross rent: $1,928
Housing units: 8,443
Homeownership rate: 85.2%
Bachelor's degree or higher: 42.0%
Unemployment rate: 7.2%

Trends

ACS 5-year · 2019–2023

Population

23,95624,231

Median household income

$101,565$126,063

Median home value

$340,200$443,900

Median gross rent

$1,702$1,928

Year	Population	Median household income	Median home value	Median gross rent
2019	23,956	$101,565	$340,200	$1,702
2020	23,961	$108,244	$352,200	$1,675
2021	24,251	$114,293	$362,200	$1,766
2022	24,273	$123,417	$417,300	$1,881
2023	24,231	$126,063	$443,900	$1,928

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 56.8%

5 to 1714.0%

18 to 246.8%

25 to 3413.4%

35 to 4413.9%

45 to 5413.2%

55 to 6413.9%

65 to 7411.0%

75 and over7.0%

	Count	Share
Under 5	1,654	6.8%
5 to 17	3,403	14.0%
18 to 24	1,644	6.8%
25 to 34	3,241	13.4%
35 to 44	3,358	13.9%
45 to 54	3,187	13.2%
55 to 64	3,379	13.9%
65 to 74	2,669	11.0%
75 and over	1,696	7.0%

Race & ethnicity

	Count	Share
White (non-Hispanic)	12,250	50.6%
Black or African American	2,581	10.7%
American Indian & Alaska Native	34	0.1%
Asian	3,879	16.0%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	208	0.9%
Two or more races	762	3.1%
Hispanic or Latino (any race)	4,517	18.6%

Educational attainment (age 25+)

No high school diploma7.5%

High school graduate25.3%

Some college or associate's25.2%

Bachelor's degree24.7%

Graduate or professional degree17.3%

	Count	Share
No high school diploma	1,314	7.5%
High school graduate	4,442	25.3%
Some college or associate's	4,412	25.2%
Bachelor's degree	4,330	24.7%
Graduate or professional degree	3,032	17.3%

Commute to work

Mean travel time to work: 28 min

Drove alone75.6%

Carpooled8.0%

Public transit2.1%

Walked1.3%

Bicycle0.0%

Worked from home12.3%

Other means0.8%

How workers get to work

	Count	Share
Drove alone	9,376	75.6%
Carpooled	988	8.0%
Public transit	259	2.1%
Walked	162	1.3%
Bicycle	0	0.0%
Worked from home	1,521	12.3%
Other means	96	0.8%

Travel time

	Count	Share
Under 15 min	2,757	25.3%
15 to 29 min	3,371	31.0%
30 to 44 min	2,324	21.4%
45 to 59 min	1,240	11.4%
60+ min	1,189	10.9%

Households

Average household size: 2.89
Poverty rate: 3.6% (852 of 23,988)

	Count	Share
Family households	6,751	81.5%
Nonfamily households	1,529	18.5%

Housing

Median year structure built: 1962

Occupancy

	Count	Share
Occupied	8,280	98.1%
Vacant	163	1.9%

Tenure (of occupied units)

	Count	Share
Owner-occupied	7,051	85.2%
Renter-occupied	1,229	14.8%

1-unit, detached78.7%

1-unit, attached4.6%

2 to 4 units6.1%

5 to 19 units5.2%

20 or more units5.3%

Mobile home & other0.0%

Units in structure

	Count	Share
1-unit, detached	6,645	78.7%
1-unit, attached	390	4.6%
2 to 4 units	519	6.1%
5 to 19 units	440	5.2%
20 or more units	448	5.3%
Mobile home & other	1	0.0%

Geography

Place GEOID: 3469390
Type (LSAD): 21
Land area: 8.3 sq mi
Water area: 0.03 sq mi
Center point: 40.5744, -74.4148