Smallest County in South Dakota

Isolated South Dakota County is One of the Least Populated in U.S
Isolated South Dakota County is One of the Least Populated in U.S
Isolated South Dakota County is One of the Least Populated in U.S
If you've done any length of traveling through the Mount Rushmore State, you know how barren some stretches can be. One South Dakota county (between Mitchell and Rapid City) takes the crown for being one of the least populated in the entire United States. But that...