Huntsville Circuit Court is the circuit court of Randolph County in the Fourteenth Judicial Circuit of the Missouri Circuit court system. Hearings for city ordinance and traffic violations in the city of Clark (US 63 and SR P) are held in this court.

The Huntsville Historical Society museum, in the first Westlake Hardware building, has exhibits of 19th century photos, furniture, a scale model of movements at Battle of Roan's Tanyard, apparel, coal mining and one of the largest balls of string in the world. The Allen Mayo Log Cabin built around 1818 stands on the Randolph County Courthouse grounds in this city. It was occupied by descendents of the original family until around 1950. This structure was taken apart log by log and moved from its location south of Huntsville, then reassembled in its present location.