Mendon is located in Adams County, IL. The population is 871, making Mendon the 4th largest city in Adams County.
There are 3 public schools in Mendon with an average Homefacts rating of C+. The total crime rate for Mendon is very low , and there are 5 registered sex offenders residing in the city. Unemployment in Mendon is moderate and the median home sales price is $0. Detailed and up-to-date Mendon property reports are available for any property address.