Iselin, New Jersey
Census designated place in Middlesex County, New Jersey
| Census | Population |
|---|---|
| 2000 | 16,698 |
| 2010 | 18,695 |
| 2020 | 20,088 |
As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.
Sources: Census 2000 Summary File 1: total population, place level, state 34, retrieved November 14, 2026; Census 2010 Summary File 1: total population, place level, state 34, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, place level, state 34, retrieved November 14, 2026.
| Measure | Iselin | Middlesex County | New Jersey |
|---|---|---|---|
| Population | 19,151 | 861,535 | 9,267,014 |
| Median household income | $112,615 | $109,028 | $101,050 |
| Median age | 38.4 | 39.4 | 40.1 |
| Median home value | $394,200 | $439,300 | $427,600 |
| Bachelor’s degree or higher | 55.0% | 45.1% | 42.9% |
| Foreign-born residents | 54.3% | 34.7% | 23.5% |
| Owner-occupied homes | 66.2% | 63.5% | 63.7% |
| Mean commute to work | 37.7 minutes | 31.9 minutes | 30.9 minutes |
Source: American Community Survey 5-year data profile 2019–2023, place level, state 34, retrieved November 14, 2026.
Median household income $112,615 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.
Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, place level, state 34, retrieved November 14, 2026.
- Owner occupied
- 4,204 units
- Renter occupied
- 2,150 units
- Vacancy rate
- 4%
Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.
Source: American Community Survey 5-year data profile 2019–2023, place level, state 34, retrieved November 14, 2026.
| School | Type | Grades | District |
|---|---|---|---|
| Indiana Avenue Elementary School | Public | K–5 | Woodbridge Township School District |
| Kennedy Park Elementary School | Public | Pre-K–K | Woodbridge Township School District |
| Oak Tree Road Elementary School | Public | K–5 | Woodbridge Township School District |
| Robert Mascenik Elementary School | Public | K–5 | Woodbridge Township School District |
| Iselin Middle School | Public | 6–8 | Woodbridge Township School District |
| John F. Kennedy Memorial High School | Public | 9–12 | Woodbridge Township School District |
Open public schools in the NCES directory for 2023–2024, placed by their listed location; private schools are not in the source. Enrollment and ratings are not shown.
Sources: NCES Common Core of Data, public school directory 2023–2024, retrieved November 14, 2026; NCES EDGE public school geocodes 2024–2025, retrieved November 14, 2026.
Community
No upcoming events in Iselin yet.
Nearby towns
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Other towns in Middlesex County
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- BrownvilleCensus designated place
- CarteretBorough
- ClearbrookCensus designated place
- ColoniaCensus designated place
- ConcordiaCensus designated place
- Cranbury TownshipTownship
- CranburyCensus designated place
- DaytonCensus designated place
- DeansCensus designated place
Something wrong here? Request a correction. A person checks it against the source within five business days.
- Type
- Census designated place
- County
- Middlesex County
- Within
- Woodbridge Township
- Land area
- 3.15 sq mi
- Water area
- 0.00 sq mi
- Population
- 19,151 (2019-2023 estimate)
- Households
- 6,354
- Median age
- 38.4
- Median household income
- $112,615
- Median home value
- $394,200
- Median gross rent
- $2,051
- Owner-occupied homes
- 66.2%
- Bachelor’s degree or higher
- 55.0%
- Foreign-born residents
- 54.3%
- Mean commute to work
- 37.7 minutes
- Census GEOID
- 3434470
Sources: Census Gazetteer 2025: places, retrieved November 14, 2026; American Community Survey 5-year data profile 2019–2023, place level, state 34, retrieved November 14, 2026.
- ZIP codes
- 08830
- Metro area
- New York-Newark-Jersey City, NY-NJ
Sources: Census 2020 ZCTA relationship file: ZCTAs to places, retrieved November 14, 2026; Census Gazetteer 2025: metropolitan and micropolitan areas, retrieved November 14, 2026.