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The Vault - Fallout Wiki
The Vault - Fallout Wiki
Fo Midwest Commonwealth.gif
Fo Midwest Commonwealth.gif
The Midwest Commonwealth

The Great Midwest Commonwealth[1][2] or simply Midwest Commonwealth[3] was one of the thirteen commonwealths of the pre-war United States of America. Created in the early 21st century, it was comprised of the former states of Wisconsin, Minnesota, Illinois, Indiana and Michigan, and borders the East Central, Plains and North Commonwealth.

In California, it is said that there are miles wide twisters in the Midwest, and that the place is one big radioactive dustbowl.[4]

Illinois Wasteland

The Illinois Wasteland was conquered by Brotherhood of Steel deserters known as the Midwestern Brotherhood. They led a harsh rule on the state. Enclave outposts are located in the city of Chicago.[5]

Known places


John Cassidy regretted not exploring the midwest in his youth.[6]


Places in the Great Midwest Commonwealth appear in Fallout Tactics, and were mentioned in Fallout: New Vegas and Van Buren.


  1. Commonwealth name on license plate embedded on ED-E
  2. Van BurenGametitle-VB.png Armstrong dialogue file: "You see soldier of the Great Midwest Commonwealth"
  3. Named Midwest Commonwealth in J.E. Sawyer's Fallout Role-Playing Game.
  4. John Cassidy's dialogue: "{363}{}{I hear they got twisters miles wide in the Midwest. It's a big ol' radioactive dustbowl now.}"
  5. Whitley: "Subject E: Diagnosis complete. Begin Recording.

    My name is Whitley. I'm a researcher at Adams Air Force base. Until recently I was in charge of the Duraframe reinforcement project for the combat model Eyebots.

    Eyebot Duraframe Subject E is both the prototype, and the last functional model in this test group.

    I was prepared to make several significant upgrades to the machines.

    However, as the project was canceled and all Duraframe assets are being diverted to Hellfire Armor, I am sending this model to the Navarro outpost.

    If you are listening to this log from one of our Enclave Outposts in Chicago, give this unit whatever repairs it needs so it can continue to Navarro."
  6. John Cassidy's dialogue: "{362}{}{If I was twenty years younger, I'd go east and explore the Midwest. Too late now, I s'pose.}"