Well... I don't right know. But we're the best one, isn't that what matters? I mean, we're the winners. Us. Not Springfield. Not Rockville. Us.
”— Linda Smith
Springfield is a town/city in the United States. The actual location is unknown.
Linda Smith claims that Andale has beaten Springfield every single year since the war in the "best town in the USA" contest.
Springfield is only mentioned in Fallout 3. In real life, it is located in Virginia, about 15 miles southwest of Washington, D.C.