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 and multiracial populations.

Population by Race

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%

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