Wyoming is a state in the mountain region of the Western United States. Wyoming is the 10th most extensive, but the least populous and the second least densely populated of the 50 United States. The western two thirds of the state is covered mostly with the mountain ranges and rangelands in the foothills of the Eastern Rocky Mountains, while the eastern third of the state is high elevation prairie known as the High Plains. Cheyenne is the capital and the most populous city in Wyoming, with a population of 91,738 in the metropolitan area (as of the 2010 census).
As specified in the designating legislation for the Territory of Wyoming, Wyoming's borders are lines of latitude, 41°N and 45°N, and longitude, 104°3'W and 111°3'W (27° W and 34° W of the Washington Meridian), making the shape of the state a latitude-longitude quadrangle.