Here is the Full List of U.S. Billionaires of 2013 According to Forbes :

Tag: U.S Billionaires of 2013,Billionaires 2013,Billionaires,Rich Men,Richest,Richest People of USA,USA,US , USA RICHEST PERSON 2013.

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1.) Bill Gates

Net Worth: $67 billion
Source of wealth: Microsoft

2.) Warren Buffett

Net worth: $53.5 billion
Source of wealth: Berkshire Hathaway

3.) Larry Ellison

Net worth: $43 billion
Source of wealth: Oracle

4.) Charles Koch

Net worth: $34 billion
Source of wealth: diversified

5.) David Koch

Net worth: $34 billion
Source of wealth: diversified

6.) Christy Walton & family

Net worth: $28.2 billion
Source of wealth: Wal-Mart

7.) Michael Bloomberg

Net worth: $27 billion
Source of wealth: Bloomberg LP

8.) Jim Walton

Net worth: $26.7 billion
Source of wealth: Wal-Mart

9.) Sheldon Adelson

Net worth: $26.5 billion
Source of wealth: casinos

10) Alice Walton

Net worth: $26.3 billion
Source of wealth: Wal-Mart

11.) S. Robson Walton

Net worth: $26.1 billion
Source of wealth: Wal-Mart

12.) Jeff Bezos

Net worth: $25.2 billion
Source of wealth: Amazon.com

13.) Larry Page

Net worth: $23 billion
Source of wealth: Google

14.) Sergey Brin

Net worth: $22.8 billion
Source of wealth: Google

15.) Carl Icahn

Net worth: $20 billion
Source of wealth: leveraged buyouts

16.) George Soros

Net worth: $19.2 billion
Source of wealth: hedge funds

17.) Forrest Mars Jr

Net worth: $17 billion
Source of wealth: candy

18.) Jacqueline Mars

Net worth: $17 billion
Source of wealth: candy

19.) John Mars

Net worth: $17 billion
Source of wealth: candy

20.) Len Blavatnik

Net worth: $16 billion
Source of wealth:diversified

21.) Michael Dell

Net worth: $15.2 billion
Source of wealth: Dell

22.) Steve Ballmer

Net worth: $15.2 billion
Source of wealth: Microsoft

23.) Paul Allen

Net worth: $15 billion
Source of wealth: Microsoft, investments

24.) Phil Knight

Net worth: $14.4 billion
Source of wealth: Nike

25.) Mark Zuckerberg

Net worth: $13.3 billion
Source of wealth: Facebook

26.) Donald Bren

Net worth: $13 billion
Source of wealth: real estate

27.) Abigail Johnson

Net worth: $12.7 billion
Source of wealth: money management

28.) Ray Dalio

Net worth: $12.5 billion
Source of wealth: hedge funds

29.) Ronald Perelman

Net worth: $12.2 billion
Source of wealth: leveraged buyouts

30.) Anne Cox Chambers

Net worth: $12 billion
Source of wealth: media

31.) James Simons

Net worth: $11.7 billion
Source of wealth: hedge funds

32.) Harold Hamm

Net worth: $11.3 billion
Source of wealth: oil & gas

33.) Rupert Murdoch

Net worth: $11.2 billion
Source of wealth: News Corp

34. John Paulson

Net worth: $11.2 billion
Source of wealth: hedge funds

35.) Jack Taylor & family

Net worth: $11 billion
Source of wealth: Enterprise Rent-A-Car

36.) Laurene Powell Jobs & family

Net worth: $10.7 billion
Source of wealth: Apple, Disney

37.) Charles Ergen

Net worth: $10.6 billion
Source of wealth: EchoStar

38.) Philip Anschutz

Net worth: $10 billion
Source of wealth: investments