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The 14 Youngest Billionaires in America

These entrepreneurs and heirs are all under 40.

This week the folks at Forbes released their annual Forbes 400, its long-time roundup of the 400 wealthiest Americans. The list, as has been been the case in recent years, is entirely comprised of billionaires. (This year, the entry point is a 13-way tie for 388th place, with each member possessing a net worth of $2 billion—slightly higher last year's baseline of $1.7 million.) And yes, most of the people on the list tend toward the older side: The average age is 67.

But not everyone on the list is a septuagenarian (or nearly one). In fact, there are a handful of billionaires under 40 who've cracked the ranks. There are tech entrepreneurs, tech entrepreneurs, and tech entrepreneurs—and a handful of heirs and socialites. So read on and meet the 14 youngest members of the three-comma club. And for more insight on their financial prowess, learn the 5 Ways Billionaires Think Differently Than Most People.

1
Julio Mario Santo Domingo III

NEW YORK, NY - SEPTEMBER 18: Julio Mario Santo Domingo Jr. (L) and Rebecca da Costa attend the 11th Brazil Foundation NYC gala at The Museum of Modern Art on September 18, 2013 in New York City. (Photo by D Dipasupil/FilmMagic)
D Dipasupil/FilmMagic

Julio Mario Santo Domingo III, 32 (right), is an heir of Colombia's second wealthiest family. He's currently worth $2.4 billion.

2
Sean Parker

Sean Parker
Shutterstock

Back in the nascent days of file sharing, Sean Parker, 37, co-founded Napster. He went on to become a key advisor to Mark Zuckerberg, 33, and served as the first president of Facebook's board. Currently, he serves on the Spotify board, and is worth $2.6 billion.

3
Bobby Murphy

Evan Spiegel and bobby murphy
Shutterstock

Bobby Murphy, 29 (right), is the co-founder and chief technology officer of Snap Inc., the company behind Snapchat. He is currently worth $3.1 billion.

4
Evan Spiegel

LOS ANGELES - APR 15: Evan Spiegel, Miranda Kerr at the 9th Breakthrough Prize Ceremony Arrivals at the Academy Museum of Motion Pictures on April 15, 2023 in Los Angeles, CA
Shutterstock

Evan Spiegel, 27, cofounded, with Murphy, Snap Inc. He is currently worth $3.1 billion. (He's also married to Australian supermodel Miranda Kerr.)

5
Robert Pera

NEW YORK, NY - FEBRUARY 13: (L-R) Robert Pera, Jesse Williams, Win Butler, Mo'Ne Davis, Spike Lee, Anthony Anderson, Mike Golic and Nick Cannon attend the NBA All-Star Celebrity Game NBA All -Star Weekend 2015 on February 13, 2015 in New York City. (Photo by Brad Barket/Getty Images)
Brad Barket/Getty Images

Robert Pera, 39 (right), made his fortune by founding Ubiquiti Networks, a tech company that brings wireless internet to areas that don't have such services. Pera also owns the Memphis Grizzlies. He is currently worth $3.2 billion. (Note: Pera brought the initial idea of Ubiquiti to his supervisors at Apple. They struck down the idea—so he struck out on his own.)

6
Rishi Shah

Doctor speaking with patient.
pcess609 / iStock

The son of a prominent Chicagoan doctor, Rishi Shah, 31, founded Outcome Health, a healthcare info-tech company, in 2006. He is currently worth $3.6 billion.

7
Nathan Blecharczyk

BARCELONA CATALONIA, SPAIN - NOVEMBER 07: Airbnb co-founder and chief strategy officer Nathan Blecharczyk during a panel discussion at the Tomorrow.Building World Congress at the Fira de Barcelona Gran Via on November 7, 2023, in Barcelona, Catalonia, Spain. The Tomorrow.Building World Congress is held as part of the Smart City Expo World Congress, the world's largest and most influential event on urban innovation. Airbnb is a platform that serves to publish, advertise and book affordable accommodation in over 190 countries via the internet or from your smartphone. (Photo By David Zorrakino/Europa Press via Getty Images)
David Zorrakino/Europa Press via Getty Images

Nathan Blecharczyk, 36, is a cofounder of Airbnb and currently serves as the company's chief technology officer. He is currently worth $3.8 billion.

Image via Wikimedia Commons

8
Brian Chesky

NEW YORK, NEW YORK - APRIL 29: Airbnb CEO Brian Chesky attends the "Gay Chorus Deep South" screening during the 2019 Tribeca Film Festival at Spring Studios on April 29, 2019 in New York City. (Photo by Dia Dipasupil/Getty Images for Tribeca Film Festival)
Dia Dipasupil/Getty Images for Tribeca Film Festival

Brian Chesky, 36, is a cofounder of Airbnb and currently serves as the company's CEO. He is currently worth $3.8 billion.

9
Joe Gebbia

NEW YORK, NEW YORK - JUNE 11: Producer Joe Gebbia attends "We Dare to Dream" premiere during the 2023 Tribeca Festival at AMC 19th Street on June 11, 2023 in New York City. (Photo by Arturo Holmes/Getty Images for Tribeca Festival)
Arturo Holmes/Getty Images for Tribeca Festival

Joe Gebbia, 34, is a cofounder of Airbnb and currently serves as the company's chief product officer. He is currently worth—yep, you guessed it—$3.8 billion.

10
Andres Santo Domingo

New York, NY - November 5, 2018: Lauren Santo Domingo and Andres Santo Domingo attend the New York Public Library 2018 Library Lions Gala at NYPL Stephen A. Schwarzman Building
Shutterstock

The half-brother of Julio Mario Santo Domingo III, Andres Santo Domingo, 39, is the co-founder of indie rock label Kemada Records. Domingo's wedding, in 2008, to Lauren Santo Domingo née Davis, was considered by Vogue to be the "wedding of the year." He is currently worth $4.8 billion, twice that of his half-brother.

11
Scott Duncan

oil fields billionaires under 40
Shutterstock

Scott Duncan, 35, is an heir to oil tycoon Dan Duncan, the founder of Enterprise Products. After the elder Duncan passed away in 2010, Scott inherited a third of the fortune. As it so happens, in 2010, the estate tax was suspended; the younger Duncan was able to hold on to and invest a sizable amount of his inheritance. He is currently worth $5.5 billion.

12
Lukas Walton

walmart store
Framalicious / Shutterstock

Lukas Walton, 31, is the grandson of Sam Walton. (You may know Sam as the founder of a little company called Wal-Mart.) He is currently worth $13.2 billion.

13
Dustin Moskovitz

SAN FRANCISCO - OCTOBER 24:Dustin Moskovitz, co-founder of Facebook, delivers his keynote address at the CTIA WIRELESS I.T. & Entertainment 2007 conference October 24, 2007 in San Francisco. (Photo by Kimberly White/Getty Images)
Kimberly White/Getty Images

Dustin Moskovitz, 33, was a co-founder of Facebook, but he left the company to co-found Asana, the productivity and project management app. Moskovitz is a whole six days younger than Zuckerberg, making him, for a time—until the Snap Inc. guys came along—the youngest self-made billionaire in history. He is currently worth $13.6 billion.

Image via Wikimedia Commons

14
Mark Zuckerberg

Mark Zuckerberg
Frederic Legrand – COMEO/Shutterstock

Yes, the Zuck is worth $71 billion. (Oh, and he's definitely running for president.)

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Ari Notis
Ari is an editor specializing in news and lifestyle. Read more
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