"The number of American households with assets of one million U.S. dollars or more has been steadily increasing in the over the last decade. About 6.98 million individuals in North America had financial assets worth at least one million U.S. dollars in 2020, which was an increase of 2.67 million in comparison to 2008. While the millionaire population has been growing throughout the economic recovery, the strongest growth has been at the very top of the wealth ladder.

In the first quarter of 2021, the top one percent in the U.S. owned 53.5 percent of all stocks and mutual funds, while the bottom 90 percent owned 11.4 percent. This value may not mean much to the average person until you see just how much value the high net-worth population has. In combination with individuals across the continent, the total value of the high net-worth individuals in North America came to 24.32 trillion U.S. dollars in 2020.

In 2020, a total of 110,850 individuals with net assets of at least 50 million U.S. dollars were residing in the United States. That is about 54 percent of the total number of ultra-high net worth individuals (UHNW) worldwide. Other aspects of the wealthy population are disproportionate as well. In 2019, about 56 percent of UHNW individuals in the United States were male."

https://www.statista.com/topics/3467/millionaires-in-the-united-states/