Wyoming is a state in the Western United States. The western two thirds of the state is mostly covered by 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. More than 48% of the land in Wyoming is owned by the U.S. Government, leading Wyoming to rank sixth in the U.S. in total acres and fifth in percentage of a state's land owned by the Federal government.