Bethalto is located in Madison county Illinois with a geographic area of 7.6 square miles. The total population in Bethalto is 9,258 with 47.3% male and 52.7% female. Children under age 5 represent 6.7% of the population, under age 18 equal 23.8% of the population and over age 65 is 21.0% of the population. The median household income is $66,834, per capita income is $32,225. There are a total of 3,795 housing units with 80.1% owner occupied. Education includes 33.8% of residents that are high school graduates and 27.3% with a bachelor's degree or higher. The average temperature in Bethalto in the summer is 74 degrees, and in the winter 27 degrees.
