"Pennsyltucky" doesn't necessarily mean "the rural parts of PA." It can mean "the swath of country roughly from Pennsylvania to Kentucky" or "places like that" or it can be even broader than that. Or it can simply mean "Pennsylvania." It's really not so easy to pigeonhole this stuff. Not accurately anyway.

It's helpful to write these things down. What's not helpful is using them as if they were precise and definitive.

EDIT: If you've badgered me in an attempt to get a different answer, try Google or Wikipedia.