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This article was first published 12 years ago

22 richest Americans in the world

Last updated on: September 21, 2012 08:54 IST

Image: Average net worth of the 400 wealthiest Americans rose to a record $4.2 billion.

The net worth of the richest Americans grew by 13 per cent in the past year to $1.7 trillion, according to Forbes magazine.

The average net worth of the 400 wealthiest Americans rose to a record $4.2 billion, up more than 10 per cent from a year ago, while the lowest net worth came in at $1.1 billion versus $1.05 billion last year, the magazine said. Seven in 10 of the list's members made their fortunes from scratch.

Source: Forbes

Click NEXT to see some of the richest Americans in the world.

22 richest Americans in the world

Image: Bill Gates with his wife Melinda
Photographs: Arnd Wiegmann/Reuters

Bill Gates

Net worth: $66 billion

Age: 56

Source: Microsoft

Residence: Medina, Washington

...

22 richest Americans in the world

Image: Warren Buffett with his wife Astrid Menks.
Photographs: Benjamin Myers/Reuters

Warren Buffett

Net worth: $46 billion

Age: 82

Source: Berkshire Hathaway

Residence: Omaha, Nebraska

...

22 richest Americans in the world

Image: Larry Ellison.
Photographs: Robert Galbraith/Reuters

Larry Ellison

Net worth: $41 billion

Age: 68

Source: Oracle

Residence: Woodside, California

...

22 richest Americans in the world

Image: Charles Koch, inset.
Photographs: Courtesy, kochind.com

Charles Koch

Net worth: $31 billion

Age: 76

Source: Diversified

Residence: Wichita, Kansas

...

Tags: Click , Kansas , Wichita

22 richest Americans in the world

Image: David Koch, inset.
Photographs: Courtesy, kochind.com

David Koch

Net worth: $31 billion

Age: 72

Source: Diversified

Residence: New York, New York

...

Tags: New York

22 richest Americans in the world

Image: Christy Walton, inset.
Photographs: Courtesy, walmart

Christy Walton and family

Net worth: $27.9 billion

Age: 57

Source: Walmart

Residence: Jackson, Wyoming

...

22 richest Americans in the world

Image: Jim Walton, left, Alice Walton, centre, and Rob Walton, right, in Fayetteville, Arkansas.
Photographs: Jacob Slaton/Reuters

Jim Walton

Net worth: $26.8 billion

Age: 64

Source: Walmart

Residence: Bentonville, Arkansas

...

22 richest Americans in the world

Image: Alice Walton, inset.
Photographs: Courtesy, Walmart

Alice Walton

Net worth: $26.3 billion

Age: 62

Source: Walmart

Residence: Fort Worth, Texas

...

Tags: , Fort Worth , Texas

22 richest Americans in the world

Image: Sam Robson Walton with his wife Carolyn.
Photographs: Ira Schwarz/Reuters

S Robson Walton

Net worth: $26.1 billion

Age: 68

Source: Walmart

Residence: Bentonville, Arkansas

...

22 richest Americans in the world

Image: Michael Bloomberg with his partner Diana Taylor.
Photographs: Jim Urquhart/Reuters

Michael Bloomberg

Net worth: $25 billion

Age: 70

Source: Bloomberg

Residence: New York, New York

...

22 richest Americans in the world

Image: Jeff Bezos with his wife Mackenzie.
Photographs: Lucas Jackson/Reuters

Jeff Bezos

Net worth: $23.2 billion

Age: 48

Source: Amazon.com

Residence: Seattle, Washington

...

22 richest Americans in the world

Image: Sheldon Adelson with his wife Miriam.
Photographs: Jason Reed/Reuters

Sheldon Adelson

Net worth: $20.5 billion

Age: 79

Source: Casinos

Residence: Las Vegas, Nevada

...

Tags: , Las Vegas , Nevada

22 richest Americans in the world

Image: Sergey Brin with designer Diane von Furstenberg.
Photographs: Carlo Allegri/Reuters

Sergey Brin

Net worth: $20.3 billion

Age: 39

Source: Google

Residence: Los Altos, California

...

22 richest Americans in the world

Image: Larry Page.
Photographs: Eduardo Munoz/Reuters

Larry Page

Net worth: $20.3 billion

Age: 39

Source: Google

Residence: Los Altos, California

...

22 richest Americans in the world

Image: George Soros with girlfriend Tamiko Bolton.
Photographs: Handout/Reuters

George Soros

Net worth: $19 billion

Age: 82

Source: Hedge funds

Residence: Katonah, New York

...

22 richest Americans in the world

Image: Forrest Mars, Junior, inset.
Photographs: Courtesy, mars.com

Forrest Mars, Jr

Net worth: $17 billion

Age: 81

Source: Candy

Residence: Big Horn, Wyoming

...

Tags:

22 richest Americans in the world

Image: Jacqueline Mars, inset.
Photographs: Courtesy, mars.com

Jacqueline Mars

Net worth: $17 billion

Age: 72

Source: Candy

Residence: The Plains, Virginia

...

Tags: , Virginia , Plains

22 richest Americans in the world


Photographs: Courtesy, mars.com

John Mars

Net worth: $17 billion

Age: 76

Source: Candy

Residence: Jackson, Wyoming

...

Tags: Jackson

22 richest Americans in the world

Image: Steve Ballmer.
Photographs: Brendan McDermid/Reuters

Steve Ballmer

Net worth: $15.9 billion

Age: 56

Source: Microsoft

Residence: Hunts Point, Washington

...

22 richest Americans in the world

Image: Paul Allen.
Photographs: Rick Wilking/Reuters

Paul Allen

Net worth: $15 billion

Age: 59

Source: Microsoft, investments

Residence: Mercer Island, Washington

...

22 richest Americans in the world

Image: Carl Icahn.
Photographs: Chip East/Reuters

Carl Icahn

Net worth: $14.8 billion

Age: 76

Source: Leveraged buyouts

Residence: New York, New York

...

22 richest Americans in the world

Image: Michael Dell.
Photographs: Robert Galbraith/Reuters

Michael Dell

Net worth: $14.6 billion

Age: 47

Source: Dell

Residence: Austin, Texas