Old bethpage is located in Nassau county New york with a geographic area of 4.2 square miles. The total population in Old bethpage is 5,450 with 51.0% male and 49.0% female. Children under age 5 represent 7.8% of the population, under age 18 equal 23.9% of the population and over age 65 is 17.7% of the population. The median household income is $153,262, per capita income is $63,317. There are a total of 1,943 housing units with 94.3% owner occupied. Education includes 22.2% of residents that are high school graduates and 57.2% with a bachelor's degree or higher. The average temperature in Old bethpage in the summer is 70 degrees, and in the winter 27 degrees.