Mill Creek is located in Union County, IL. The population is 80, making Mill Creek the 6th largest city in Union County.
There are 0 public schools in Mill Creek with an average Homefacts rating of NA. The total crime rate for Mill Creek is moderate , and there are 0 registered sex offenders residing in the city. Unemployment in Mill Creek is very high and the median home sales price is $0. Detailed and up-to-date Mill Creek property reports are available for any property address.