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Millennial money: Five of the youngest entrepreneurs

The Snapchat app is displayed on an Apple iPhone 5s.

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Despite the sometimes discouraging news about millennials and the job market, the list of well-known companies started by that demographic is plentiful, and include names like Facebook, Airbnb and Dropbox.

The task of earning a 10-digit net worth before the age of 30 is a tough task, and one that has only recently begun to be explored by experts. With a collective estimated wealth of more than $2 billion, however, the success of these young executives suggest that, when it comes to becoming an entrepreneur, age is nothing but a number.

Read More Snapchat stock sale values company at up to $16B

—By Janine Wolf, special to CNBC.com.
Posted 26 July 2015

Andrew Harrer | Bloomberg | Getty Images