Age when they became billionaires:

Age when they became billionaires:

Mark Zuckerberg: 23
Bill Gates: 31
Tiger Woods: 33
Jack Dorsey: 35
Jeff Bezos: 35
J.K. Rowling: 38
Mark Cuban: 40
Elon Musk: 41
Richard Branson: 41
Sheryl Sandberg: 44
Oprah Winfrey: 49
Michael Jordan: 51
George Lucas: 52
Warren Buffett: 56.