Lombard is located in Dupage county Illinois with a geographic area of 10.2 square miles. The total population in Lombard is 43,755 with 48.2% male and 51.8% female. Children under age 5 represent 6.6% of the population, under age 18 equal 20.4% of the population and over age 65 is 15.7% of the population. The median household income is $86,167, per capita income is $41,154. There are a total of 17,030 housing units with 69.8% owner occupied. Education includes 18.2% of residents that are high school graduates and 52.3% with a bachelor's degree or higher. The average temperature in Lombard in the summer is 74 degrees, and in the winter 27 degrees.