Maryland

In the early 21st century, when the United States was divided into thirteen commonwealths, the old state of Maryland became part of the Columbia Commonwealth, along with Virginia and Washington, DC. Bethesda Game Studios, the developer of Fallout 3, is headquartered in real-life Rockville, Maryland, although the name comes from Bethesda, Maryland, where the company was originally founded in 1985.

Germantown is also in Maryland along with a few other places on the map.

An upcoming Fallout 3 DLC, Point Look, will take place in Point Lookout Marlyand.