Well, as a Michigander, I think of the Midwest as the Rust Belt, which I realize may be disagreeable to some, like another commenter in this thread. That said, culturally speaking, Pittsburgh has far more in common with Cleveland than with Philadelphia. Pennsylvania is a very divided state, so I would count part of it as the East Coast and part as the Midwest, geographically if nothing else. But that very disagreement is why I called that part out separately.