West sayville is located in Suffolk county New york with a geographic area of 1.9 square miles. The total population in West sayville is 4,956 with 46.3% male and 53.7% female. Children under age 5 represent 4.6% of the population, under age 18 equal 21.2% of the population and over age 65 is 14.9% of the population. The median household income is $126,553, per capita income is $46,934. There are a total of 1,699 housing units with 82.0% owner occupied. Education includes 29.4% of residents that are high school graduates and 36.7% with a bachelor's degree or higher. The average temperature in West sayville in the summer is 70 degrees, and in the winter 27 degrees.