6) Hearst family (Net worth: $32 billion)

The Hearst family is behind the multinational conglomerate group Hearst Corporation. This New York City-based corporation was founded by William Randolph Hearst in 1887. Today it is one of the largest diversified communication companies in the world. The founder’s grandson, William R. Hearst III, is the chairman of the media behemoth.

5) Cox family (Net worth: $34.5 billion)

James M. Cox bought the Dayton Evening News way back in 1898. Over the decades, the business has expanded to include television, radio and much more. Cox Enterprises includes Cox Media Group (television, news papers and radio stations) and Cox Communications (broadband and cable television).

4) Cargill-MacMillan family (Net worth: $45 billion)

There are 14 billionaires in the Cargill-MacMillan family. It is the family with most number of billionaires. The family owns 88 percent of Cargill, Inc., the largest private company in the US in terms of revenue. The company processes crops, sells food, sources ingredients, trades commodities and provides financial risk management.