New Jersey · United States
Iselin population
18,695people · latest figure
Iselin has a population of 18,695, making it the 2400th largest place we list in United States. It is in New Jersey.
Iselin holds under a tenth of one per cent of United States's 349,035,494 people. New York City, the largest place we list there, is 471 times its size. Twenty years earlier the World Gazetteer recorded 17,019, a rise of 10%.
The 2005 figure comes from the World Gazetteer archive restored on this site. The two sources may draw the settlement's boundary differently, so treat the change as indicative rather than exact. Why figures differ.
Iselin is in New Jersey, which has 589 recorded places.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Mission Hill | Massachusetts | 18,722 |
| Greater Upper Marlboro | Maryland | 18,720 |
| Frederickson | Washington | 18,719 |
| Whitehall | Ohio | 18,694 |
| Suwanee | Georgia | 18,694 |
| Rutherford | New Jersey | 18,690 |
All places in United States → · New Jersey →
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.