Chillicothe is located in Peoria county Illinois with a geographic area of 5.3 square miles. The total population in Chillicothe is 6,326 with 46.2% male and 53.8% female. Children under age 5 represent 8.5% of the population, under age 18 equal 21.8% of the population and over age 65 is 22.9% of the population. The median household income is $51,998, per capita income is $30,985. There are a total of 2,659 housing units with 77.5% owner occupied. Education includes 34.3% of residents that are high school graduates and 27.0% with a bachelor's degree or higher. The average temperature in Chillicothe in the summer is 74 degrees, and in the winter 27 degrees.
