Yes.
Not to mention the different accents here in the U.S. You can really identify where someone's from based on their accent and rhetoric.
Example: If someone says "Y'all", it's safe to assume they're from the South. Haha, Yanks have funny accents. "I pahk'd mah cah in tha yahhd." I actually have a German foreign exchange student that my family is hosting, we're constantly giving him crap about his accent.
Edit: Hogwarts' accent is hilarious. It's such a thick, Southern accent. :3 And just to note, though I'm from the South and have lived in Oklahoma for most of my life, I lack an accent. It only shows itself every now-and-then. The best accent ever is a Louisianan accent. Oh God, it has that THICK Cajun draw to it, it's so unmistakable.