Greenlawn is located in Suffolk county New york with a geographic area of 3.8 square miles. The total population in Greenlawn is 14,598 with 46.9% male and 53.1% female. Children under age 5 represent 4.5% of the population, under age 18 equal 26.3% of the population and over age 65 is 16.9% of the population. The median household income is $116,891, per capita income is $45,617. There are a total of 4,473 housing units with 83.1% owner occupied. Education includes 18.5% of residents that are high school graduates and 49.5% with a bachelor's degree or higher. The average temperature in Greenlawn in the summer is 70 degrees, and in the winter 27 degrees.
