Williamson County
County in Illinois
Williamson County is a county in Southern Illinois. At the 2020 census, it had a population of 67,153. The largest city and county seat is Marion.
Williamson County is included in the Carbondale-Marion, IL Metropolitan Statistical Area. This area... Wikipedia
Cities: Herrin, Johnston City, Creal Springs, and more
County seat: Marion
Population: 66,695 (2022)
Congressional district: 12th
Named for: Williamson County, Tennessee