Wyoming is a province.
Wyoming [ waɪˈoʊmɪŋ ] is a state in the mountain region of the western United States . The state is the tenth largest by area , the least populous and the second least densely populated state in the country . Wyoming is bordered on the north by Montana , on the east by South Dakota and Nebraska , on the south by Colorado , on the southwest by Utah , and on the west by Idaho . The western two-thirds of the state is covered mostly with the mountain ranges and rangelands in the Rocky Mountains , while the eastern third of the state is high elevation prairie known as the High Plains .