Dumont was named for an early French settler named Charles Dumont. The town was founded in 1890 as a lumber town and a shipping point for cattle. A spur of the railroad line went northwest to Hanna.
In the winter, the Dumont Trailhead is a major snowmobile trailhead. Orange diamond-shaped metal markers on the trees mark the snowmobile trails. Snowmobiles are allowed on the trail only between Dumont and Deadwood during specified months of the year.
Mile Post: 92.6
