Marion County, county in Illinois, United States. As of 2020 county had an estimated population of 37,045 inhabitants. The county was created 201 years ago in 1823. Its county seat is Salem.
There are 1 city/town in Marion County, IL. The largest city of Marion County is Vernon with a population of 119.
Vernon, Village in Illinois, United States
List of cities, towns, neighborhoods & other populated places in Marion County.
City Name | Title | Population |
---|---|---|
Vernon | Village in Illinois, United States | 119 |