Region
California
52
Nevada
17
Arizona
16
Utah
15
Colorado
12
Idaho
12
Alaska
10
Montana
9
New Mexico
9
Oregon
7
United States
7
Washington (State)
6
West (U.S.)
6
San Joaquin Valley
5
Delmarva Peninsula
4
Monterey County
4
Texas
4
Antarctica
3
Coast Ranges
3
Massachusetts
3
Mojave Desert
3
Northwest, Pacific
3
Rocky Mountains
3
Sacramento Valley
3
Sangre de Cristo Mountains (Colo. and N.M.)
3
Santa Maria Basin
3
Sierra Nevada (Calif. and Nev.)
3
Wet Mountain Valley
3
Atlantic Coast (U.S.)
2
Barstow Region
2
Blackfoot Region
2
Bonneville, Lake
2
Churchill County
2
Coast Range
2
Colorado Plateau
2
Colorado River Region (Colo.-Mexico)
2
Feather River Region
2
Fisher Valley
2
Flagstaff Region
2
Fox Mountain (Nye County)
2
Fresno County
2
Granite Mountains
2
Grant County
2
Great Basin
2
Gulf Coast (U.S.)
2
Harney County
2
Honcut Creek Region
2
Hopewell Region
2
Hopi Indian Reservation
2
Horry County
2
more ...