After yesterday's news of Musk (a Los Angeles resident) overtaking Gates for the #2 spot (he's since fallen back to #3), I became a little more interested in this.
NYC CSA actually has 137:
Greater NY area (116)
Greater White Plains area (2) --> Westchester and Rockland County
Greater Poughkeepsie area (2) --> Dutchess and Sullivan County
Princeton, NJ (1) --> Mercer County
Greater Greenwich area (15)
Greater Branford area (1) --> New Haven County
You're welcome, NYC boosters.
Also, South Florida has 38, not 40. Amazing how all but one live in Palm Beach County. You would think Miami Beach would be home to a number of billionaires.