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Christy Walton

Photo by: L. Matthew Bowler
Christy Walton
Christy Walton

Net worth: $28.2 billion
Country: U.S.
Source of wealth: Wal-Mart
Christy Walton's net worth reached new highs as Wal-Mart stock jumped in 2012. She remains the richest woman in the United States. Christy inherited her wealth when husband John Walton, a former Green Beret and Vietnam war medic, died in an airplane crash in 2005.

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