Region
Colorado
185
Utah
97
United States
56
Nevada
51
Alaska
50
New Mexico
48
Montrose County
47
Wyoming
39
Florida
32
West (U.S.)
32
Idaho
28
Nye County
28
Arizona
27
San Miguel County
27
San Juan County
26
Montana
23
South Dakota
22
Mesa County
19
California
18
Texas
17
Colorado Plateau
14
Jefferson County
14
Grand County
11
Tennessee
10
Sweetwater County
9
Grant County
8
Pennsylvania
8
Southern States
8
Fall River County
7
Germany (West)
7
Juab County
7
New Jersey
7
Emery County
6
Larimer County
6
South Carolina
6
Boulder County
5
Brazil
5
Fremont County
5
Gilpin County
5
Kansas
5
Monument Valley (Ariz. and Utah)
5
North Dakota
5
Cassia County
4
Garfield County
4
McKinley County
4
Mora County
4
New York (State)
4
Oklahoma
4
Sandoval County
4
Washington (State)
4
more ...