Libertyville is located in Lake county Illinois with a geographic area of 8.8 square miles. The total population in Libertyville is 20,300 with 48.2% male and 51.8% female. Children under age 5 represent 5.3% of the population, under age 18 equal 26.4% of the population and over age 65 is 17.1% of the population. The median household income is $150,580, per capita income is $72,487. There are a total of 7,324 housing units with 80.5% owner occupied. Education includes 7.0% of residents that are high school graduates and 74.6% with a bachelor's degree or higher. The average temperature in Libertyville in the summer is 74 degrees, and in the winter 27 degrees.
