Millionaire Households: 5,220,000
Ultra High Net Worth Households: 2,692
GDP (millions of USD): 14,657,800 (highest)
The United States has by far the largest amount of millionaire households, as well as ultra-high-net-worth-households. The US is home to the largest economy in the world — almost three times the size of China’s, the next biggest. There is also a growing income gap in the country. In 2009, the top 20 percent of earners, or those making $100,000 or more a year, made half of all income generated in the country, according to the US Census. The bottom 20 percent made only 3.4 percent.
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