I consider my hometown to be San Diego, California. I don't know any in specific that formed there, but I'm sure there are a billion.
I lived in Vinita, Oklahoma for about 10 years, and Dr. Phil is the only thing anyone knows that we can take credit for.
I moved to Tulsa, Oklahoma and lived there for about a year, and we have Hanson and Caroline's Spine! =D Caroline's Spine being the only cool one of the two.
I now live in Akron, Ohio, about another billion awesome bands formed in the area, but I don't know any specifically from Akron.