Region
West (U.S.)
25
United States
17
Colorado
5
Northwestern States
5
Southwest, New
5
Canada
4
Iowa
4
Texas
4
California
3
China
2
Missouri River
2
Northwest, Pacific
2
Oregon
2
Denver
1
Ellsworth (Kan.)
1
Golden Spike National Historical Park (Utah)
1
Hualapai Indian Reservation (Ariz.)
1
Hualapai Indian Tribe of the Hualapai Indian Reservation, Arizona
1
Idaho
1
Kansas
1
Longmont (Colo.)
1
Mexico
1
Montana
1
Nebraska
1
New Mexico
1
Northwest boundary of the United States
1
Puget Sound (Wash.)
1
Rocky Mountains
1
San Francisco
1
San Francisco (Calif.)
1
Tehuantepec, Isthmus of
1
Washington Aqueduct (Md. and Washington, D.C.)
1
Wyoming
1