Lockport is located in Will county Illinois with a geographic area of 11.5 square miles. The total population in Lockport is 25,499 with 48.7% male and 51.3% female. Children under age 5 represent 5.8% of the population, under age 18 equal 27.6% of the population and over age 65 is 10.5% of the population. The median household income is $87,817, per capita income is $35,707. There are a total of 8,975 housing units with 80.9% owner occupied. Education includes 23.4% of residents that are high school graduates and 40.2% with a bachelor's degree or higher. The average temperature in Lockport in the summer is 72 degrees, and in the winter 27 degrees.