Darien is located in Dupage county Illinois with a geographic area of 6.2 square miles. The total population in Darien is 21,843 with 50.2% male and 49.8% female. Children under age 5 represent 2.8% of the population, under age 18 equal 17.9% of the population and over age 65 is 21.4% of the population. The median household income is $100,771, per capita income is $49,892. There are a total of 8,697 housing units with 82.0% owner occupied. Education includes 13.5% of residents that are high school graduates and 53.0% with a bachelor's degree or higher. The average temperature in Darien in the summer is 73 degrees, and in the winter 27 degrees.
