Rounding out the top 10 richest families on the Forbes 400 in 2011.
The Walton Family is by far the richest family in United States (the dispersed fortunes of the Rockefellers and others being unknown to the public), their wealth inherited from Bud and Sam Walton, founders of the world’s biggest retailer,Wal-Mart. The Waltons have a combined wealth of US$93 billion according to Forbes 400. The oldest fortune is that of the Cargill family. W.W. Cargill founded a grain storage company in 1865 which has since grown into the world’s largest private company.
Number of relatives refers to members on The Forbes 400 in 2011:
#1. Walton Family – 6 relatives
Combined Net Worth: $93 Billion
#2. Koch Family – 3 brothers
Combined Net Worth: $54 billion
Source: Koch Industries, which operates pipelines, produces fertilizer, chemicals, polymers and owns forestry company Georgia Pacific; Brothers David and Charles own large stakes in $100 billion (revenues).
#3. Mars Family – 3 siblings
#4 Cox Family- 3 relatives
#5. Pritzker Family – 11 relatives
Combined net worth: $19.6 billion
Source: The family inherited pieces of a diversified fortune that includes Hyatt Hotels and host of industrial assets that were built up A.N. Pritzker and his sons Jay (d. 1999) and Robert.
#6. Cargill Family – 7 relatives
Combined Net Worth: $14.3 billion
Source: Seven members of the Cargill and MacMillan families inherited stakes agribusiness giant Cargill Inc., which had revenues of $119.5 billion in the fiscal year through May 2011.
#7. Duncan Family – 4 siblings
#8. Ziff Family – 3 brothers
Combined Net Worth: $12.6 billion
Source: Brothers share ownership of Ziff Brothers Investments, a diversified portfolio of hedge funds, real estate, equities and commodities. Their father built the Ziff-Davis publishing empire.
#9. Newhouse Family – 2 brothers
Combined Net Worth: $12.5 billion
Source: Brothers S.I. and Donald run newspaper and media company Advance Publications (owner of magazine publisher Conde Nast) and own stock in Discovery Communications.
#10. S. C. Johnson Family – 5 relatives
Combined Net Worth: $11.5 billion
Source: H. Fisk Johnson is CEO of household products company S.C. Johnson, with $9 billion in revenues.
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