Mason is located in Effingham County, IL. The population is 361, making Mason the 8th largest city in Effingham County.
There are 0 public schools in Mason with an average Homefacts rating of NA. The total crime rate for Mason is moderate , and there are 0 registered sex offenders residing in the city. Unemployment in Mason is moderate and the median home sales price is $0. Detailed and up-to-date Mason property reports are available for any property address.
Cities near Mason include Mason Township, Edgewood and Union Township.