West islip is located in Suffolk county New york with a geographic area of 6.1 square miles. The total population in West islip is 26,614 with 49.6% male and 50.4% female. Children under age 5 represent 5.9% of the population, under age 18 equal 20.5% of the population and over age 65 is 14.4% of the population. The median household income is $132,415, per capita income is $50,702. There are a total of 8,432 housing units with 96.3% owner occupied. Education includes 22.7% of residents that are high school graduates and 44.9% with a bachelor's degree or higher. The average temperature in West islip in the summer is 70 degrees, and in the winter 27 degrees.
