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 MelindaPhotographs: Arnd Wiegmann/Reuters
Bill Gates
Net worth: $66 billion
Age: 56
Source: Microsoft
Residence: Medina, Washington
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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22 richest Americans in the world
Photographs: Courtesy, mars.com
John Mars
Net worth: $17 billion
Age: 76
Source: Candy
Residence: Jackson, Wyoming
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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
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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
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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
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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
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