Lyman County South Dakota (Historic Districts) has 1 places on the National Register of Historic Places including 1 place of National significance and 1 place of Statewide significance. Significant places include Medicine Creek Archeological District and Medicine Creek Archeological District.
Prehistoric cultural affiliation(s) include Plains Village, Plains Archaic and Native American dating back to 6499 BC. Prominent architectural styles found in Lyman Country are .