Union is located in Mchenry County, IL. The population is 719.
There are 1 public schools in Union with an average Homefacts rating of NA. The total crime rate for Union is very low , and there are 0 registered sex offenders residing in the city. Unemployment in Union is moderate and the median home sales price is $0. Detailed and up-to-date Union property reports are available for any property address.
Cities near Union include Coral Township, Marengo and Seneca Township.