Rochester is located in Sangamon County, IL. The population is 3,712, making Rochester the 5th largest city in Sangamon County.
There are 5 public schools in Rochester with an average Homefacts rating of A. The total crime rate for Rochester is low , and there are 0 registered sex offenders residing in the city. Unemployment in Rochester is moderate and the median home sales price is $0. Detailed and up-to-date Rochester property reports are available for any property address.
Cities near Rochester include Rochester Township, Clear Lake and Cooper Township.