In fairness, that’s 2 out of like 6-9 games.

Fallout 3 is set in the DC area.

I’m sure you know where New Vegas was set.

Fallout 4 is in the Boston area.

Fallout 76 is in the Appalachian region.

Tactics (which was a solid game and I’ll fight anyone who claims otherwise) was set around Chicago.

We do not acknowledge the existence of Fallout: Brotherhood of Steel.

Fallout Shelter just plain doesn’t count. Nothing ties it to a setting anyways.