Winfield is located in Dupage county Illinois with a geographic area of 3.1 square miles. The total population in Winfield is 9,683 with 50.4% male and 49.6% female. Children under age 5 represent 5.4% of the population, under age 18 equal 20.5% of the population and over age 65 is 18.8% of the population. The median household income is $125,481, per capita income is $55,616. There are a total of 3,834 housing units with 88.7% owner occupied. Education includes 13.3% of residents that are high school graduates and 65.7% with a bachelor's degree or higher. The average temperature in Winfield in the summer is 74 degrees, and in the winter 27 degrees.
