St. libory is located in St. clair county Illinois with a geographic area of 1.0 square miles. The total population in St. libory is 591 with 51.3% male and 48.7% female. Children under age 5 represent 4.1% of the population, under age 18 equal 17.6% of the population and over age 65 is 22.5% of the population. The median household income is $67,431, per capita income is $34,742. There are a total of 265 housing units with 81.5% owner occupied. Education includes 29.8% of residents that are high school graduates and 17.7% with a bachelor's degree or higher. The average temperature in St. libory in the summer is 74 degrees, and in the winter 27 degrees.
