If income inequality were a sport, the residents of 740 Park Avenue in Manhattan would all be medalists. This address boasts the highest number of billionaires in the United States.
2014 • 5.6 ★
2013 • 5.5 ★
1992 • 6.7 ★
2007 • 6.7 ★
2008 • 7.1 ★
