Cicero is a suburb of Chicago and an incorporated town in Cook County, Illinois, United States. The population was 83,891 at the 2010 census. As of 2013, the town had a total population of 84,103, making it the 11th largest municipality in Illinois. Cicero is named for the town of Cicero, New York, which in turn was named for Marcus Tullius Cicero, the Roman statesman and orator.