Source: Boston Consulting Group (BCG)
Notes: With more than 7.1 million, the US easily boasted the largest volume of millionaire households in the world last year, according to BCG, with China (2.4 million) a solid second and Japan (1.2 million) in third. In terms of density of millionaire households (proportion of households that are millionaire households), Qatar topped the list at 17.5%, followed by Switzerland (12.7%) and Singapore (10%). The US was seventh, with 5.7% of households being millionaire households.
About the Data: Figures are from the BCG Global Wealth Market-Sizing Database, 2014.