Colonia vs South Plainfield

A side-by-side comparison of Colonia and South Plainfield: population, income, housing, and more.

Colonia and South Plainfield are places in New Jersey. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

South Plainfield has the higher population (24,231 vs 18,294 in Colonia). Colonia has the higher median household income ($134,301 vs $126,063 in South Plainfield). Colonia has the higher median home value ($473,200 vs $443,900 in South Plainfield).

Population, income & housing

	Colonia	South Plainfield
Population	18,294	24,231
Median age	43.3 yrs	41.7 yrs
Median household income	$134,301	$126,063
Median home value	$473,200	$443,900
Median gross rent	$1,964	$1,928
Housing units	6,243	8,443
Homeownership rate	88.2%	85.2%
Bachelor's degree or higher	46.5%	42.0%
Unemployment rate	4.3%	7.2%

Trends (ACS 5-year, 2019–2023)

	Colonia	South Plainfield
Population	17,801 → 18,294 (+2.8%)	23,956 → 24,231 (+1.1%)
Median household income	$112,590 → $134,301 (+19.3%)	$101,565 → $126,063 (+24.1%)
Median home value	$363,900 → $473,200 (+30.0%)	$340,200 → $443,900 (+30.5%)
Median gross rent	$1,637 → $1,964 (+20.0%)	$1,702 → $1,928 (+13.3%)

Colonia

Population

17,80118,294

Median household income

$112,590$134,301

Median home value

$363,900$473,200

Median gross rent

$1,637$1,964

South Plainfield

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

Age & race/ethnicity

Age distribution (share)

	Colonia	South Plainfield
Under 5	4.1%	6.8%
5 to 17	17.0%	14.0%
18 to 24	5.9%	6.8%
25 to 34	10.5%	13.4%
35 to 44	14.6%	13.9%
45 to 54	13.7%	13.2%
55 to 64	15.0%	13.9%
65 to 74	11.9%	11.0%
75 and over	7.4%	7.0%

Race & ethnicity (share)

	Colonia	South Plainfield
White (non-Hispanic)	59.9%	50.6%
Black or African American	4.4%	10.7%
American Indian & Alaska Native	0.0%	0.1%
Asian	14.2%	16.0%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	1.8%	0.9%
Two or more races	3.0%	3.1%
Hispanic or Latino	16.6%	18.6%

Educational attainment (age 25+)

Share of adults 25+

	Colonia	South Plainfield
No high school diploma	8.3%	7.5%
High school graduate	23.1%	25.3%
Some college or associate's	22.1%	25.2%
Bachelor's degree	30.0%	24.7%
Graduate or professional degree	16.5%	17.3%

Commute to work

How workers get to work (share)

	Colonia	South Plainfield
Drove alone	75.7%	75.6%
Carpooled	5.9%	8.0%
Public transit	2.6%	2.1%
Walked	0.7%	1.3%
Bicycle	0.0%	0.0%
Worked from home	13.8%	12.3%
Other means	1.3%	0.8%

Housing

Units in structure (share)

	Colonia	South Plainfield
1-unit, detached	89.3%	78.7%
1-unit, attached	1.4%	4.6%
2 to 4 units	3.9%	6.1%
5 to 19 units	1.7%	5.2%
20 or more units	3.5%	5.3%
Mobile home & other	0.3%	0.0%

Poverty & households

	Colonia	South Plainfield
Poverty rate	5.9%	3.6%
Average household size	2.95	2.89
Mean commute (minutes)	33	28
Median year structure built	1959	1962