Carroll County, county in Illinois, United States. As of 2020 county had an estimated population of 14,241 inhabitants. The county was created 185 years ago in 1839. Its county seat is Mount Carroll.
There are 1 city/town in Carroll County, IL. The largest city of Carroll County is Thomson with a population of 548.
Thomson, Town in Illinois, USA
List of cities, towns, neighborhoods & other populated places in Carroll County.
City Name | Title | Population |
---|---|---|
Thomson | Town in Illinois, USA | 548 |