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Iselin, NJ
Census-designated place in Middlesex County, New Jersey. ZIP codes: 08830.
Population
19,551
Land area
3.2sq mi
People per sq mi
6,203
ZIP codes
1
Iselin and its ZIP codes
Iselin at a glance
- Iselin is about 4.9 times as dense as New Jersey as a whole.
- It is the 60th most populous of 700 cities and towns in New Jersey.
- Households here earn a median of $109,500 a year, 6% more than the New Jersey figure of $103,556.
- A typical owner-occupied home is valued at $426,800 (6% below New Jersey) and median rent is $2,113 a month.
Local data for Iselin, NJ
Counts from official public data
Housing and community stats
Iselin, NJ, American Community Survey 2020-2024
Median household income
$109,500
Poverty rate
7.9%
Median home value
$426,800
Median rent
$2,113/mo
Homeownership
65.3%
Bachelor's or higher
53.7%
Median age
38.5
Average commute
34.5 min
Largest reported origins and ancestries: Indian Americans (7,857), Irish Americans (1,132), Italian Americans (1,068).
Economy and federal money
Jobs, pay, income and spending are for Middlesex County. PPP loans are for Iselin.
Unemployment rate
4.8%
Aug 2026, -1.1 pts in a year
Average annual pay
$85,564
431,665 jobs, 2025
Income per person
$77,293
BEA, 2024
Federal spending
$5.04B
FY 2026, $5,838 per person
PPP loans
$148M
942 loans, 12,985 jobs reported
How people get to work
Iselin, NJ, workers 16 and older. American Community Survey 5-year estimates
- Drove alone55.0%
- Carpooled4.9%
- Public transit12.4%
- Walked3.5%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other3.4%
- Worked from home20.8%
Average one-way commute: 34.5 minutes for people who do not work from home.
Environment and hazard risk
Iselin, NJ, from FEMA, NOAA and EPA
Natural hazard risk
Relatively High
Top: strong wind
Storm events since 1996
1,228
Countywide, mostly thunderstorm wind
Flood insurance policies
2,496
1.2% of homes, county
July high / Jan low
88° / 24°F
48.7 inches of rain a year
Health statistics
Share of adults in Iselin, NJ, CDC PLACES estimates
Obesity
24.0%
U.S. 33.3% -9.3 pts
Diabetes
11.5%
U.S. 12.1% -0.6 pts
Smoking
8.9%
U.S. 12.8% -3.9 pts
Uninsured (18-64)
8.1%
U.S. 11.1% -3.0 pts
ZIP codes in Iselin
1 in or overlapping Iselin. Population shown
Cities near Iselin
| Name | Distance | Land area (sq mi) |
|---|---|---|
| Menlo Park TerraceCensus-designated place | 1.1 mi | 0.4 |
| ColoniaCensus-designated place | 1.4 mi | 4 |
| WoodbridgeCensus-designated place | 1.9 mi | 4.6 |
| FordsCensus-designated place | 2.3 mi | 1.9 |
| AvenelCensus-designated place | 2.5 mi | 3.4 |
| HopelawnCensus-designated place | 2.9 mi | 0.4 |
| SewarenCensus-designated place | 3.1 mi | 1.2 |
| MetuchenBorough | 3.1 mi | 2.8 |
| RahwayCity | 3.4 mi | 3.9 |
| Port ReadingCensus-designated place | 3.5 mi | 2 |
| KeasbeyCensus-designated place | 3.8 mi | 1.5 |
| Perth AmboyCity | 4.1 mi | 4.7 |
| CarteretBorough | 4.4 mi | 4.4 |
| South PlainfieldBorough | 5.2 mi | 8.3 |
| LindenCity | 5.5 mi | 10.7 |
| GarwoodBorough | 5.6 mi | 0.7 |
Frequently asked questions
- What county is Iselin, NJ in?
- Iselin is in Middlesex County, New Jersey.
- What ZIP codes are in Iselin, NJ?
- ZIP codes in or overlapping Iselin include 08830.
- What is the population of Iselin, NJ?
- About 19,551 people live in Iselin, based on American Community Survey 5-year estimates.
- What cities are near Iselin?
- Nearby places include Menlo Park Terrace (1.1 mi), Colonia (1.4 mi), Woodbridge (1.9 mi), Fords (2.3 mi), Avenel (2.5 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023