

The Pacific States division of the Western US includes the five US states of Oregon, Hawaii, Alaska, California, and Washington. With a mean elevation of 6,800 ft, Colorado is the highest state in this US division. Semi-arid to arid climate prevails in most areas and alpine climate prevails in the higher slopes of mountains of the area. The Mountain division features high mountains, vast deserts, and large plains. Most of the states within this division observe the Mountain Time. These states are the most mountainous states of the country and have the highest average elevation among other states of the country.

The former includes Wyoming, Montana, and Idaho while the latter includes New Mexico, Utah, Arizona, Nevada, and Colorado. The Mountain division of the West includes eight US states further grouped into the two regions of Northwest and Southwest. This US region is divided into two major divisions, the Mountain and the Pacific region, and encompasses 13 states, including Hawaii and Alaska. The largest number of minorities in the country are found here and the sex ratio here is tilted towards the males, more than any other US region. Several biomes of the country ranging from deserts to forested mountains are found here. The West in the US refers to the westernmost states of the nation. As such, the US Census Bureau divides the US into four regions (demarcated by the numbers 1-4 below) and nine divisions (demarcated by the letters A-I below). The large size of the country necessitates its division into several statistical regions and divisions to ease the collection of statistical data. The country has 48 contiguous states, the capital's federal district, and the two non-contiguous states of Hawaii and Alaska. The country encompasses an area of 9.8 million square km and has a population of more than 325 million. The US is a large country, the third largest in the world by area.
