Your jaw will drop: the world's youngest billionaires in numbers

2,153

The number of billionaires on Forbes's 2019 list of the world's richest.

71 ...

of those form an even more select group: the under-40 set.

$299bn (R4.4-trillion) ...

what those 71 youngest billionaires together are worth, up from $265bn last year.

41 ...

of those - more than half - are self-made billionaires.

30 ...

of these young entrepreneurs made their fortunes in the tech industry.

7 ...

made their fortunes in fashion and retail.

7 ...

made their fortunes in real estate.

1 ...

of the 41 self-made under 40 is a woman, 21-year-old Kylie Jenner, founder of Kylie Cosmetics. She made her debut this year as the youngest self-made billionaire to date. The rest are all men.

14 ...

of the remaining female billionaires under 40 inherited their fortunes.

$2.1bn each ...

the net worth of John Collison, 29, and his brother Patrick, 30, co-founders of payments company Stripe. Jenner replaces John as the youngest self-made billionaire.

$62.3bn ...

the fortune of the richest under-40 billionaire, Mark Zuckerberg, 35. He's worth three times as much as the next youngest on the list.

$22.1bn ...

the worth of the next richest on the list, Yang Huiyan - age 37 - from China.

• Source: Forbes.com