The Yankton County Courthouse is located in Yankton, South Dakota. Built in 1892, this historic building showcases a blend of architectural styles, primarily Romanesque Revival. It serves as the center for local government and judicial proceedings, housing various county offices and courtrooms. The courthouse is notable for its distinctive clock tower and intricate stonework. It is listed on the National Register of Historic Places, reflecting its significance in the community. The building not only functions as a courthouse but also stands as a symbol of the county's history and civic pride.