Region
South Dakota
Fall River County
29
Custer County
10
Pennington County
10
Black Hills (S.D. and Wyo.)
8
North Dakota
6
Wyoming
6
Shannon County
5
Montana
4
Jackson County
3
Hughes County
2
Minnesota
2
Badlands National Park
1
Butte County
1
Carter County
1
Colorado
1
Crook County
1
Iowa
1
Meade County
1
Missouri
1
Nebraska
1
Powder River Basin (Wyo. and Mont.)
1
Stanley County
1
Utah
1
Washabaugh County
1
Weston County
1