Downers grove is located in Dupage county Illinois with a geographic area of 14.6 square miles. The total population in Downers grove is 49,263 with 48.7% male and 51.3% female. Children under age 5 represent 5.9% of the population, under age 18 equal 21.5% of the population and over age 65 is 19.1% of the population. The median household income is $97,197, per capita income is $53,339. There are a total of 20,115 housing units with 75.1% owner occupied. Education includes 12.8% of residents that are high school graduates and 60.1% with a bachelor's degree or higher. The average temperature in Downers grove in the summer is 74 degrees, and in the winter 27 degrees.