In terms of sheer numbers the State of Florida, South Florida specifically, out guns all other cities in the United States (except NY) for the thousands of mob guys who have lived there on either a part-time or year round basis.

And in terms of diversity, no other city or place (not even NYC) even comes close to South Florida as far as the varied number of crime families from across the entire U.S. who have settled there. LE has documented over the years nearly every single borgata as having had members or associates move there. I think they tracked something like 19-20 families out of the alleged 24-25 families as having planted a flag there at one time or another.