North Takoma of course.
Sorry if I came off a tad brusk. Its just this gets discussed here ad nauseum and well, like I said it seems pretty obvious to me that its pointless. Some think that the writers are really giving actual clues to a real state. But that was just a joke too.
The closest thing to a real answer is as somebody said, they live in the fictional state of North Tahoma. The abbreviation NT usually appears on their drivers’ licenses.
What is ther left to discuss?
After all this time it should be understood that the Simpsons live in a state of suspended animation.
::d&w::