Western United States

Western United States American West, Far West, the West
Region
Left-right from top: Los Angeles skyline, the Grand Canyon, Yellowstone National Park, Boise skyline, Angel's Landing, Mt. Rainier, Seattle skyline
This map reflects the Western United States as defined by the Census Bureau. This region is divided into Mountain and Pacific areas.[1]
Subregions	Mountain states Northwestern United States Pacific states Southwestern United States
Country	United States
States	Alaska, Arizona, California, Colorado, Hawaii, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, Wyoming as defined by the Census Bureau.[1] Regional definitions may vary slightly from source to source.
Area [2]
• Total	1,873,251.63 sq mi (4,851,699.4 km2)
• Land	1,751,053.31 sq mi (4,535,207.3 km2)
Population  (2020)[3]
• Total	78,588,572
• Density	42/sq mi (16/km2)
Demonym	Westerner
GDP (nominal) [4]
• Total	$5.619 trillion (2019)
• per capita	$71,719 (2019)

The Western United States (also called the American West, the Western States, the Far West, the Western territories, and the West) is one of the four census regions defined by the United States Census Bureau.

As American settlement in the U.S. expanded westward, the meaning of the term the West changed. Before around 1800, the crest of the Appalachian Mountains was seen as the western frontier. The frontier moved westward and eventually the lands west of the Mississippi River were considered the West.^[5]

The U.S. Census Bureau's definition of the 13 westernmost states includes the Rocky Mountains and the Great Basin to the Pacific Coast, and the mid-Pacific islands state, Hawaii. To the east of the Western United States is the Midwestern United States and the Southern United States, with Canada to the north and Mexico to the south.

The West contains several major biomes, including arid and semi-arid plateaus and plains, particularly in the American Southwest; forested mountains, including three major ranges, the Sierra Nevada, the Cascades, and Rocky Mountains; the long coastal shoreline of the American Pacific Coast; and the rainforests of the Pacific Northwest.