+1
So, just where IS the South? It could be the Mason Dixon line, or the old slave states, or the confederate states or a place where people have one of those particular speech accents, but if it's about latitude, then do western states that were not part of that whole slavery-accent-civil war-culture war-secession, "seecesshh" thing count as "The South" (the mythic South, that is)?
Often movies present it as a place full of all of those stereotypes that we've all seen way too many times. It's one those interesting things, considering that, living in Baltimore, I see elements of both regions right in my neighborhood, and having been in lots of places in the more verifiable South, I've realized that much of it is a matter of a cultural myth and exactly where you are who you are with.
I'm thinking of Barry Levinson's movies, set in Baltimore (once a haven of secessionists), but having pretty much nothing to do with that culture, which still exists in places around here. If you live here, you probably have a little cognitive map that tells you "where you are", so you know which accent to use today.