Glen carbon is located in Madison county Illinois with a geographic area of 10.3 square miles. The total population in Glen carbon is 12,468 with 49.1% male and 50.9% female. Children under age 5 represent 6.9% of the population, under age 18 equal 25.5% of the population and over age 65 is 18.4% of the population. The median household income is $84,956, per capita income is $45,687. There are a total of 5,118 housing units with 69.5% owner occupied. Education includes 16.0% of residents that are high school graduates and 56.0% with a bachelor's degree or higher. The average temperature in Glen carbon in the summer is 74 degrees, and in the winter 27 degrees.
