>>1211538It's been a running joke in the show that they hint at but never confirm and often make fun of.
A few examples include such as the image I posted before in which Ned says Springfield is bordered by Ohio, Nevada, Maine, and Kentucky which is impossible
A chalkboard intro joke that reads "Springfield is in any state but yours"
A businessman buying tickets to Springfield only to not know which Springfield he's going to
And in the family guy crossover episode there's an "Oh yeah" joke where the Kool Aid Man is supposed to break through a wall only for him to not turn up and then he phones Peter Griffin to tell him he has no idea where Springfield is