Iselin, New Jersey

Iselin, New Jersey
Location of Iselin in Middlesex County highlighted in red (left). Inset map: Location of Middlesex County in New Jersey highlighted in orange (right).
Iselin
Location in Middlesex County
Iselin
Location in New Jersey
Iselin
Location in the United States
Coordinates: 40°34′09″N 74°19′16″W / 40.569295°N 74.321106°W / 40.569295; -74.321106
Country United States
State New Jersey
CountyMiddlesex
TownshipWoodbridge
Named afterAdrian Iselin
Area
  Total
3.15 sq mi (8.17 km2)
  Land3.15 sq mi (8.16 km2)
  Water0.00 sq mi (0.00 km2)  0.03%
Elevation
30 ft (9 m)
Population
 (2020)
  Total
20,088
  Density6,373.1/sq mi (2,460.7/km2)
Time zoneUTC−05:00 (Eastern (EST))
  Summer (DST)UTC−04:00 (Eastern (EDT))
ZIP Code
08830
Area code(s)732/848
FIPS code34-34470
GNIS feature ID2389973

Iselin (/ˈɪzˈlɪn/) is an unincorporated community and census-designated place (CDP) located within Woodbridge Township, in Middlesex County, in the U.S. state of New Jersey. As of the 2020 United States census, Iselin's population was 20,088, up from 18,695 in 2010.

Previously known as "Perrytown" and "Unionville", Iselin received its current name after New York City investment banker and philanthropist Adrian Iselin, who established a finishing school in the 1870s for girls from wealthy New York families there. Iselin additionally subsidized the erection of a new train station, which was later replaced by a newer station to the south known as Metropark.