Illiopolis is located in Sangamon County, IL. The population is 872.
There are 2 public schools in Illiopolis with an average Homefacts rating of B+. The total crime rate for Illiopolis is low , and there are 0 registered sex offenders residing in the city. Unemployment in Illiopolis is moderate and the median home sales price is $0. Detailed and up-to-date Illiopolis property reports are available for any property address.
Cities near Illiopolis include Illiopolis Township, Niantic Township and Niantic.