Top Five Wealthiest People in New York

David Koch

Net Worth: $17.5 billion

Profession: American engineer and business man.

How He Got Rich: He is the co-owner and executive president of Koch Industries, which has major petroleum and natural gas holdings and is now the second largest privately held company in the U.S.

Fast Facts: In case you don’t remember, Koch was the Libertarian Party’s vice-presidential candidate in the 1980 U.S. presidential elections along with Ed Clark. He attended the Massachusetts Institute of Technology and is happily married with three kids.