Simpson is located in Johnson County, IL. The population is 103, making Simpson the 6th largest city in Johnson County.
There are 0 public schools in Simpson with an average Homefacts rating of NA. The total crime rate for Simpson is very low , and there are 0 registered sex offenders residing in the city. Unemployment in Simpson is high and the median home sales price is $0. Detailed and up-to-date Simpson property reports are available for any property address.
Cities near Simpson include Tunnel Hill, New Burnside and Vienna.