how many billionaires in the us - Google Search

Quite a lot.

https://www.google.com/search?newwindow=1&client=tablet-android-samsung&sxsrf=ACYBGNSsqYd2dKenc47qdqyA59MnVoR-gA%3A1580341814287&ei=NhoyXrzxEJShgAafoK-IDQ&q=how+many+billionaires+in+the+us&oq=how+many+bill&gs_l=mobile-gws-wiz-serp.1.4.0i273j0l7.85747.90639..94263...1.1..0.408.2081.0j11j1j0j1......0....1.......8..0i71j35i362i39j35i39j0i67j0i131.sqb03cLsb5w