Historical Marker
Circa 1906
Historical marker location:
812 North 6th Street, St. Charles, Missouri
( Marker is on North 6th Street north of Franklin Street, on the right when traveling north.)
812 N. 6th.
The Missouri State Penitentiary, located in Jefferson City, was once the oldest operating prison west of the Mississippi River. It opened in 1836 and closed in 2004.