kdka.com - Vt. Town Named 'Simpsons' Official Home: "(AP) SPRINGFIELD, Vt. It's Duff time in Springfield, Vt., which on Tuesday was proclaimed the official hometown of TV's favorite dysfunctional family, the Simpsons."
I always figured they were from Missouri. There's a lot of rednecks, there, like Cletus and family. But it's not the south because they don't have accents. Plus, how can they be from Vermont? There aren't any trees in the cartoon. No one ever says anything about maple syrup, either.