Iselin

County:: Middlesex County
County Seat:: No
Area (mi²):: 3.152
State:: New Jersey

Iselin is a CDP located in Middlesex County, New Jersey. Iselin has a 2025 population of 18,465. Iselin is currently declining at a rate of -0.08% annually but its population has increased by 6.39% since the most recent census, which recorded a population of 17,356 in 2020.

The average household income in Iselin is $138,553 with a poverty rate of 6.39%. The median age in Iselin is 38.4 years: 38 years for males, and 39 years for females.

Demographics

The racial composition of Iselin includes 54.52% Asian, 24.61% White, 8.13% Black or African American, 6.65% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Asian

White

Black or African American

Other race

Two or more races

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
Asian	10,441	54.52%
White	4,714	24.61%
Black or African American	1,557	8.13%
Other race	1,274	6.65%
Two or more races	1,132	5.91%
Native American	33	0.17%
Native Hawaiian or Pacific Islander	0	0%

Iselin Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Iselin's average per capita income is $71,021. Household income levels show a median of $112,615. The poverty rate stands at 6.39%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$146,372	-
Families	$120,833	$147,888
Households	$112,615	$138,553
Non Families	$42,500	$74,938

$71,021

Average Income

$112,615

Median Household Income

6.39%

Poverty Rate