Colonia vs Iselin

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

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

Iselin has the higher population (19,151 vs 18,294 in Colonia). Colonia has the higher median household income ($134,301 vs $112,615 in Iselin). Colonia has the higher median home value ($473,200 vs $394,200 in Iselin).

Population, income & housing

	Colonia	Iselin
Population	18,294	19,151
Median age	43.3 yrs	38.4 yrs
Median household income	$134,301	$112,615
Median home value	$473,200	$394,200
Median gross rent	$1,964	$2,051
Housing units	6,243	6,618
Homeownership rate	88.2%	66.2%
Bachelor's degree or higher	46.5%	55.0%
Unemployment rate	4.3%	3.1%

Trends (ACS 5-year, 2019–2023)

	Colonia	Iselin
Population	17,801 → 18,294 (+2.8%)	18,175 → 19,151 (+5.4%)
Median household income	$112,590 → $134,301 (+19.3%)	$98,250 → $112,615 (+14.6%)
Median home value	$363,900 → $473,200 (+30.0%)	$306,700 → $394,200 (+28.5%)
Median gross rent	$1,637 → $1,964 (+20.0%)	$1,769 → $2,051 (+15.9%)

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

Iselin

Population

18,17519,151

Median household income

$98,250$112,615

Median home value

$306,700$394,200

Median gross rent

$1,769$2,051

Age & race/ethnicity

Age distribution (share)

	Colonia	Iselin
Under 5	4.1%	4.4%
5 to 17	17.0%	16.1%
18 to 24	5.9%	8.9%
25 to 34	10.5%	13.3%
35 to 44	14.6%	15.9%
45 to 54	13.7%	12.3%
55 to 64	15.0%	12.8%
65 to 74	11.9%	10.6%
75 and over	7.4%	5.7%

Race & ethnicity (share)

	Colonia	Iselin
White (non-Hispanic)	59.9%	22.8%
Black or African American	4.4%	8.1%
American Indian & Alaska Native	0.0%	0.1%
Asian	14.2%	54.2%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	1.8%	0.7%
Two or more races	3.0%	3.3%
Hispanic or Latino	16.6%	10.7%

Educational attainment (age 25+)

Share of adults 25+

	Colonia	Iselin
No high school diploma	8.3%	11.1%
High school graduate	23.1%	20.3%
Some college or associate's	22.1%	13.6%
Bachelor's degree	30.0%	28.7%
Graduate or professional degree	16.5%	26.3%

Commute to work

How workers get to work (share)

	Colonia	Iselin
Drove alone	75.7%	53.4%
Carpooled	5.9%	6.7%
Public transit	2.6%	14.4%
Walked	0.7%	4.4%
Bicycle	0.0%	0.0%
Worked from home	13.8%	17.8%
Other means	1.3%	3.4%

Housing

Units in structure (share)

	Colonia	Iselin
1-unit, detached	89.3%	66.8%
1-unit, attached	1.4%	2.9%
2 to 4 units	3.9%	3.2%
5 to 19 units	1.7%	14.1%
20 or more units	3.5%	12.9%
Mobile home & other	0.3%	0.2%

Poverty & households

	Colonia	Iselin
Poverty rate	5.9%	6.4%
Average household size	2.95	3.01
Mean commute (minutes)	33	38
Median year structure built	1959	1961