Iselin is located in New Jersey. Iselin, New Jersey has a population of 19,604. Iselin is less family-centric than the surrounding county with 30% households with children. The county percentage for households with children is 33%.
The median household income in Iselin, New Jersey is $99,867. The median household income for the surrounding county is $91,657 compared to the national median of $66,222. The median age of people living in Iselin is 41.4 years.
The average high temperature in July is 85.7 degrees, with an average low temperature in January of 19.8 degrees. The annual precipitation is 50.94.