Islip is located in Suffolk county New york with a geographic area of 4.7 square miles. The total population in Islip is 16,965 with 48.3% male and 51.7% female. Children under age 5 represent 4.6% of the population, under age 18 equal 18.0% of the population and over age 65 is 17.7% of the population. The median household income is $109,857, per capita income is $48,380. There are a total of 6,060 housing units with 90.2% owner occupied. Education includes 24.8% of residents that are high school graduates and 39.0% with a bachelor's degree or higher. The average temperature in Islip in the summer is 70 degrees, and in the winter 27 degrees.
