I find it hard to believe parochialism is actually a draw. You can be parochial anywhere.
I know people who've moved in the other direction, from New York to Boston, but they're almost universally in very high paying fields and are filling niches that international banks and consulting firms with offices here can't fill locally. They also tend to have rather conservative attitudes/approaches to life and enjoy the fact that central Boston can, in the words of someone I know who found this a positive attribute, "look like the J. Crew catalog".