Cortland is located in Dekalb County, IL. The population is 4,280, making Cortland the 4th largest city in Dekalb County.
There are 1 public schools in Cortland with an average Homefacts rating of B-. The total crime rate for Cortland is very low , and there are 0 registered sex offenders residing in the city. Unemployment in Cortland is very high and the median home sales price is $0. Detailed and up-to-date Cortland property reports are available for any property address.
Cities near Cortland include Cortland Township, DeKalb and Maple Park.