Plainview is located in Nassau county New york with a geographic area of 5.7 square miles. The total population in Plainview is 26,267 with 49.7% male and 50.3% female. Children under age 5 represent 5.3% of the population, under age 18 equal 23.1% of the population and over age 65 is 21.1% of the population. The median household income is $156,622, per capita income is $64,203. There are a total of 8,936 housing units with 90.5% owner occupied. Education includes 13.6% of residents that are high school graduates and 68.6% with a bachelor's degree or higher. The average temperature in Plainview in the summer is 70 degrees, and in the winter 27 degrees.
