Illiopolis is located in Illinois. Illiopolis, Illinois has a population of 861. Illiopolis is less family-centric than the surrounding county with 26.07% of the households containing married families with children. The county average for households married with children is 27.08%.
The median household income in Illiopolis, Illinois is $60,000. The median household income for the surrounding county is $58,687 compared to the national median of $57,652. The median age of people living in Illiopolis is 38.8 years.
The average high temperature in July is 85.9 degrees, with an average low temperature in January of 18.8 degrees. The average rainfall is approximately 38.5 inches per year, with 19.4 inches of snow per year.
