Iselin, New Jersey Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Iselin, New Jersey is 19,151 as of the 2023 American Community Survey, making it the 62nd-largest city in New Jersey. The median household income is $112,615, the median home value is $394,200, and the median age is 38.4.
19,151
Population
6076
People / sq mi
$112,615
Median Income
$394,200
Median Home Value
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Iselin covers 3.2 sq mi of land at 6076 people per square mile.
About Iselin, NJ
Iselin is distinguished by its share of foreign-born residents, 9.5% of the population. Iselin is a city in New Jersey with a population of 19,151.
Median household income is $112,615, above the US median of $78,538. Poverty runs at 5.0%, below the national 12.4%. Homes carry a median value of $394,200, with typical rent around $2,051.
Educational attainment is on the higher side for US cities — 55.0% of adults hold a four-year degree, above the national 35.0%. About 17.8% of workers primarily work from home, above the national 14.0%, and the average commute runs about 38 minutes each way.
Race & Ethnicity
| White | 24.6% |
| Black or African American | 8.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.5% |
| Two or More Races | 0.0% |
Economy & Income
$112,615
Median Household Income
$46,000
Per Capita Income
5.0%
Poverty Rate
2.0%
Unemployment Rate
Housing
$394,200
Median Home Value
$2,051
Median Rent
66.2%
Owner-Occupied
Education
88.9%
High School+
55.0%
Bachelor's+
Commute
14.4%
Drive Alone
53.4%
Public Transit
17.8%
Work From Home
37.7 min
Avg Commute
Community Profile
9.5%
Foreign Born
35.9%
Non-English at Home
1.8%
Veterans
9.0%
With Disability
94.5%
Health Insurance
96.0%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 22.1% |
| Finance, Insurance & Real Estate | 16.6% |
| Information | 11.1% |
| Manufacturing | 11.0% |
| Retail Trade | 9.7% |
| Education, Health Care & Social Services | 4.3% |
| Construction | 2.7% |
| Public Administration | 2.7% |
| Arts, Entertainment & Food Services | 2.6% |
| Transportation & Warehousing | 2.2% |
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Frequently Asked Questions
Iselin, New Jersey has a population of 19,151 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 62nd-largest city in New Jersey.
The median household income in Iselin, New Jersey is $112,615, with 5.0% of residents living below the federal poverty level.
The median home value in Iselin, New Jersey is $394,200, with median monthly rent at $2,051 and a homeownership rate of 66.2%.
The median age in Iselin, New Jersey is 38.4 years. The population is 51.0% male and 49.0% female.
Iselin Cdp, NJ Climate
Iselin Cdp, NJ has an average annual temperature of 11.9°C (53°F) and receives about 1236 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
11.9°C
Avg Temp
1236
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -1° / 31° | 98 mm |
| February | 1° / 33° | 77 mm |
| March | 5° / 41° | 104 mm |
| April | 11° / 51° | 103 mm |
| May | 16° / 61° | 115 mm |
| June | 21° / 70° | 98 mm |
| July | 24° / 75° | 126 mm |
| August | 23° / 74° | 113 mm |
| September | 19° / 67° | 109 mm |
| October | 13° / 55° | 93 mm |
| November | 8° / 46° | 104 mm |
| December | 2° / 36° | 96 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Iselin Cdp, NJ
The most comfortable months to visit Iselin Cdp, NJ are typically June, September and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -5°C low). July is usually the wettest month.
Where to stay near Iselin
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.