Iselin Flag

Iselin

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.

18.5K
Total Population
5,859
Density (mi²)
-15 -0.08%
Growth

Iselin Population

Iselin Population

Data after 2023 is projected based on recent change

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

Asian (54.5%)

White (24.6%)

Black or African American (8.1%)

Other race (6.7%)

Two or more races (5.9%)

Native American (0.2%)

Race
Population
Percentage (of total)
Asian10,44154.52%
White4,71424.61%
Black or African American1,5578.13%
Other race1,2746.65%
Two or more races1,1325.91%
Native American330.17%

Iselin Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)