Northern Commonwealth

Northern Commonwealth was one of the 13 commonwealths comprising an intermediate level of governance in the United States of America, comprising Montana, Wyoming, North Dakota and South Dakota. It bordered Canada in the north, the Northwest to the west, Four States to the south, Plains to the southeast, and Great Midwest Commonwealth in the east.

Wyoming
Territories of Wyoming have been penetrated by Followers of the Apocalypse by the late 23rd century. Should the Great Khans be convinced to abandon the Mojave during the Second Battle of Hoover Dam, can become the crucible for a future Khan Empire built in the Northwest, bolstered by ancient knowledge of governance, economics, and transportation obtained from the local Followers.

The plains can also host another tribe, the White Legs. If they are broken by Joshua Graham and the Dead Horses, they flee into the wilderness of Wyoming, where half their tribe dies in the first winter, with the remnants scattered to the winds the following spring.

Montana
Montana is home to various human communities with a thriving coal mining industry.

The Brotherhood of Steel has a bunker in the region as well, simply called the Montana Bunker.

Notable characters

 * Lonesome Drifter: Born and raised in Montana.
 * The player can establish that their Courier visited Montana around 2264 in conversation with the Drifter and may have sired a child, if the player character is male and has the Lady Killer perk.

Appearances
The Northern Commonwealth does not appear in any Fallout games to date, but its constituent states are mentioned in Fallout: New Vegas and Honest Hearts.