Petersburg is a city in and the county seat of MenardCounty, Illinois, United States, on the bluffs and part of the floodplain overlooking the Sangamon
Randolph County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 30,163. Its county seat is Chester
State Historic Site, MenardCounty Lovejoy State Memorial, Madison County Martin–Boismenue House, St. Clair County Metamora Courthouse State Historic Site