The target population contains members of a group that a researcher is interested in studying. The results of the study are generalized to this population, because they all have significant traits in...
Area code 406. The map to the right is clickable; click on an area code to go to the page for that code. Coordinates: 47Â°00â²01â³N 109Â°45â²04â³W / 47.00028Â°N 109.75111Â°W / 47.00028; -109.75111 (State of Montana) Area code 406 is the telephone area code covering the entire state of Montana. It has been Montana's area code since area codes were created in 1947.
Montana has a 545-mile (877 km) border with three Canadian provinces: British Columbia, Alberta, and Saskatchewan, the only state to do so. It also borders North Dakota and South Dakota to the east, Wyoming to the south, and Idaho to the west and southwest. Montana is ranked 4th in size, but 44th in population and 48th in population density of the 50 United States. The western third of Montana contains numerous mountain ranges.