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For a list of all Commonwealths in the Fallout universe, see Location.
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Fo Gulf Commonwealth
Fo Gulf Commonwealth
The Gulf Commonwealth

The Gulf Commonwealth was one of the thirteen commonwealths of the pre-War United States of America.


Created in 1969, it was comprised of the former states of Louisiana, Mississippi, Alabama, and Florida.[1] The commonwealth bordered the Southeast Commonwealth, the East Central Commonwealth, and the Texas Commonwealth.

Former FloridaEdit

Gametitle-FOT2 A G.E.C.K. had been irradiated, and thus, the "Garden of Eden" it created was full of mutant plants and fungi. The mutant garden began to spread fairly rapidly, preying upon animal life and using them as carriers/fertilizer to spread its fungal seed. While it had accelerated regrowth and nature reclaiming the wasteland, the fact it was irradiated meant it also began to wipe out humans.

Gametitle-FOT2 The Midwestern Brotherhood of Steel had also gained a foothold in Florida. Mutant crocodiles were some of the forms of regional wildlife.

Former MississippiEdit

Gametitle-FO4 A pre-War military supply yard existed somewhere in the former state, as mentioned in General Brock's terminal at Fort Strong.[2] It was described as being a location where the new model M42 Fat Man launchers were sent. The warheads were supposed to ship at a later date but never made it due to the Great War.

Gametitle-FO4 NW The state was also mentioned in a Nuka-World production before the war titled A Soft Drink Named Desire.[3]


The Gulf Commonwealth is mentioned in Fallout 3 and its add-on Point Lookout, as well as Fallout 4 and its add-on Nuka-World. It also would have appeared in the canceled Fallout Tactics 2.


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