The fourth-largest state in the United States is Montana, which has seven letters. Montana is located in the western region of the United States and is bordered by Idaho, Wyoming, North Dakota, and South Dakota. It is the fourth largest state in terms of land area, with an area of 147, 042 square miles. Montana is known for its vast mountain ranges, including the Rocky Mountains, and its diverse wildlife. It is also home to Glacier National Park, one of the most popular national parks in the United States.