Oakbrook terrace is located in Dupage county Illinois with a geographic area of 1.3 square miles. The total population in Oakbrook terrace is 2,909 with 50.4% male and 49.6% female. Children under age 5 represent 7.0% of the population, under age 18 equal 14.3% of the population and over age 65 is 17.9% of the population. The median household income is $61,563, per capita income is $37,713. There are a total of 1,346 housing units with 38.0% owner occupied. Education includes 20.4% of residents that are high school graduates and 48.4% with a bachelor's degree or higher. The average temperature in Oakbrook terrace in the summer is 74 degrees, and in the winter 27 degrees.