Country, Density, Millionaire Households

1. Singapore, 17.1%, 188,000
2. Qatar, 14.3%, 47,000
3. Kuwait, 11.8%, 63,000
4. Switzerland, 9.5%, 322,000
5. Hong Kong, 8.8%, 212,000
6. U.A.E., 5.0%, 57,000
7. U.S., 4.3%, 5,134,000
8. Israel, 3.6%, 83,000
9. Taiwan, 3.2%, 246,000
10. Bahrain, 3.2%, 8,000
11. Japan, 2.9%, 1,587,000
12. Belgium, 2.9%, 134,000
13. Oman, 2.5%, 12,000
14. Ireland, 2.2%, 33,000
15. Netherlands, 2.1%, 152,000
16. Saudi Arabia, 1.9%, 92,000
17. Australia, 1.6%, 132,000
18. Denmark, 1.6%, 41,000
19. U.K., 1.5%, 411,000
20. Canada, 1.4%, 185,000

Data from: Boston Consulting Group and Bloomberg Billionaires