Salem is a city in and the county seat of Marion County, Illinois, United States. The population was 7,282 at the 2020 census.
Downtown Salem, July 2019
Birthplace of William Jennings Bryan
Marion County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 37,729. Its county seat is Salem.
Marion County Courthouse in Salem