Hey, Frank: Two members of my gospel quartet are certifiably black and grew up in the south... one in Virginia and one in South Carolina. They both really like bluegrass and when we go to a folk festival, they always seem to find their way to the bluegrass workshops. As for blacks... how many blacks like folk music? Or even know what it is..

Joe and Frankie both grew up listening to the Grand Ole Opry and probably know early country music better than most white northerners. Some of it is cultural, but some is geographic, too.

The survey was many years ago, Sinsul, but I expect that the same opinions still hold. I agree that a part of the reason is cultural.
I've gone to a couple of bluegrass festivals, but they are probably more prevalent in "red" (voted for Bush) states than blue ones...

Jerry