Iselin, New Jersey Population 2024

19,666

Iselin is a city located in Middlesex County New Jersey. Iselin has a 2024 population of 19,666. Iselin is currently growing at a rate of 3.03% annually and its population has increased by 13.31% since the most recent census, which recorded a population of 17,356 in 2020.

The average household income in Iselin is $135,332 with a poverty rate of 5.44%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Iselin is 40.4 years, 40.1 years for males, and 40.9 years for females.

Iselin Demographics

According to the most recent ACS, the racial composition of Iselin was:

  • Asian: 51.84%
  • White: 28.4%
  • Black or African American: 8.08%
  • Two or more races: 7.58%
  • Other race: 3.45%
  • Native American: 0.65%
  • Native Hawaiian or Pacific Islander: 0%
Land Area (mi²)
3.2 sq mi
Density (mi²)
6,239.90/sq mi
Growth Since 2020
13.31% (2,310)
The current population of Iselin, New Jersey is 19,666 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 17,356.

Iselin, New Jersey Population 2024

Population by Race

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Race
Population
Percentage (of total)
Asian9,59651.84%
White5,25728.4%
Black or African American1,4968.08%
Two or more races1,4037.58%
Other race6393.45%
Native American1200.65%
Native Hawaiian or Pacific Islander00%

Asian

White

Black or African American

Two or more races

Other race

Native American

Native Hawaiian or Pacific Islander

Iselin Population by Race

Iselin Population Pyramid 2024

Iselin Median Age

40.4

Total

40.1

Male

40.9

Female

Iselin Adults

There are 15,242 adults, (3,366 of whom are seniors) in Iselin.

Iselin Age Dependency

55.9

Age Dependency Ratio

28.3

Old Age Dependency Ratio

27.5

Child Dependency Ratio

Iselin Sex Ratio

Female9,31050.29%
Male9,20149.71%

Iselin Population by Age

Iselin Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All6,4442.8768.731.3
Married4,2223.2968.431.6
Non Family1,1501.2764.335.7
Female7322.7182.717.3
Male3403.4758.241.8

3.17

Average Family Size

2.87

Average Household Size

68.7%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Iselin Households and Families

Male

Female

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Education Attained
Count
Percentage
Less Than 9th Grade2541.87%
9th to 12th Grade1,0837.98%
High School Graduate3,08022.69%
Some College1,51011.13%
Associates Degree4143.05%
Bachelors Degree3,77127.78%
Graduate Degree3,46125.5%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Iselin Educational Attainment by Sex (over 25)

Iselin Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
Asian6,9276,2775,154
White3,7803,335901
Hispanic1,206973415
Black946915473
2+ Races897829391
Other Race43833256
Native American1201200

The highest rate of high school graduation is among native american people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 74.4%.

Iselin Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Overall$70,669$76,215$65,674
Less Than 9th Grade$52,473$59,797$34,943
High School Graduate$45,047$37,422$46,783
Some College$58,036$70,625$57,715
Bachelors Degree$85,188$86,364$83,828
Graduate Degree$96,402$107,568$69,618

$70,669

Average Earnings

$76,215

Average Male

$65,674

Average Female

Iselin Earnings by Educational Attainment

Iselin Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Iselin Language

39.85% of Iselin residents speak only English, while 60.15% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 41.69% of the population.

Iselin Language

Iselin Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White4,7114259.02%
Asian9,5962973.1%
Hispanic1,78919811.07%
Other63919630.67%
Multiple1,403876.2%

5.44%

Overall Poverty Rate

5.92%

Male Poverty Rate

4.96%

Female Poverty Rate

Poverty in Iselin

The race most likely to be in poverty in Iselin is Other, with 30.67% below the poverty level.

The race least likely to be in poverty in Iselin is Asian, with 3.1% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.47%. Among those working part-time, it was 7.72%, and for those that did not work, the poverty rate was 10.23%.

Iselin Poverty

rate

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Rate
Poverty
Less Than 9th Grade11.59%
High School6.56%
Some College3.59%
Bachelors or Greater3.35%

Iselin Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed5.71%
Female Employed3.38%
Male Employed2.31%
Male Unemployed0%

Iselin Poverty Rate by Employment Status and Sex

Iselin Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Households$109,646$135,332
Families$125,441$146,114
Married Families$142,962$-999,999,999
Non Families$61,458$76,847

mean

median

Income by Household Type

Iselin Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

61.7%

Overall Marriage Rate

66.4%

Male Marriage Rate

57.3%

Female Marriage Rate

Iselin Married by Age and Sex

male

female

Iselin Marriage

The age group where males are most likely to be married is 35-44, while the female age group most likely to be married is 45-54.

Iselin Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Iselin Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

369

Number of Veterans

369

Male Veterans

0

Female Veterans

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War
Veterans
Vietnam111
Korea31
World War II16
Second Gulf War13
First Gulf War0

Iselin Veterans by War

count

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Age Group
Veterans
75+212
65 to 7476
55 to 6451
35 to 5430
18 to 340

Iselin Veterans by Age

count

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Name
Veterans
% of Total
White2645.65%
Asian430.57%
Hispanic402.81%
2+ Races312.61%
Black181.48%
Other Race132.87%

Iselin Veterans by Race

Iselin Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

10.57%

Veteran Poverty Rate

15.72%

Veteran Disability Rate

Iselin Veterans by Education

LaborForceParticipation

64.2%

Labor Force Participation

62.2%

Employment Rate

3%

Unemployment Rate

Iselin Employment by Age

LaborForceParticipation

Iselin Employment by Race

LaborForceParticipation

Iselin Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

35.19%

Born in Iselin

49.01%

Native Born

50.99%

Foreign Born

23.65%

Non Citizen

27.35%

Naturalized

Place of Birth

49.01% of Iselin residents were born in the United States, with 35.19% having been born in New Jersey. 23.65% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Iselin Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202419,6665783.03%
202319,0885773.12%
202218,5118274.68%
202117,6843281.89%
202017,356-819-4.51%
201918,175-99-0.54%
201818,274-1,148-5.91%
201719,422110.06%
201619,4112651.38%
201519,1466893.73%
201418,457-542-2.85%
201318,999-116-0.61%
201219,1153521.88%
201118,763680.36%
201018,69500%

Iselin Population by Year