Centereach is located in Suffolk county New york with a geographic area of 8.9 square miles. The total population in Centereach is 31,100 with 48.5% male and 51.5% female. Children under age 5 represent 6.4% of the population, under age 18 equal 22.2% of the population and over age 65 is 14.2% of the population. The median household income is $109,247, per capita income is $40,152. There are a total of 9,741 housing units with 81.6% owner occupied. Education includes 23.5% of residents that are high school graduates and 40.1% with a bachelor's degree or higher. The average temperature in Centereach in the summer is 70 degrees, and in the winter 27 degrees.
