Iselin is located in Middlesex county New jersey with a geographic area of 3.2 square miles. The total population in Iselin is 17,356 with 48.3% male and 51.7% female. Children under age 5 represent 4.7% of the population, under age 18 equal 19.7% of the population and over age 65 is 18.2% of the population. The median household income is $101,386, per capita income is $43,925. There are a total of 6,317 housing units with 71.9% owner occupied. Education includes 26.0% of residents that are high school graduates and 50.9% with a bachelor's degree or higher. The average temperature in Iselin in the summer is 73 degrees, and in the winter 34 degrees.
