[Rob Ribaudo]

I think they are from Illinos. I am preaty sure that they even said that in one episode, but I can't remember which episode. And about Springfield not beibg able to have a seaport and being in any state, this is the Simpsons, it does not have to follow any form of logic at all. Springfield has very tall mountains, canyons, seaports, and a nuclear power plant for this "small town" that is not even on the maps.