Not only from state-to-state (as you allude to). I'm from SC and can easily distinguish the accent spoken in Upstate SC (which sounds much like the stereotypic

Not only from state-to-state (as you allude to). I'm from SC and can easily distinguish the accent spoken in Upstate SC (which sounds much like the stereotypical "Georgia peach" accent) from one spoken by older people in the Low Country area around Charleston, from the accent spoken by the rest of the state. And move up just a few miles from Upstate SC into the mountains of NC (and tip of SC), and you have an entirely different accent. I suspect that these differences are being lost in younger generations, as everyone moves toward a more standardized accent, but I can still distinguish the difference in accents among most South Carolinians.