10 Kids Who Became Millionaires Before They Turned 20

2. Mark Zuckerberg

By now everyone knows the name Mark Zuckerberg. The founding of a little website called Facebook made Zuckerberg a millionaire by the time he hit the age of 20. Mark wasn’t happy just being a lowly millionaire so he worked at it and became a billionaire by the time he was 23.

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Whether or not Zuckerberg stole the idea for Facebook from the Winklevoss twins is irrelevant because now he is worth $33 billion and one of the 10 richest people in the whole world.