#1 Bill Gates $77.2 Billion 2015 Billionaires Net Worth $79.2 Billion Cofounder, Bill & Melinda Gates Foundation Age - 61 Source Of Wealth - Microsoft, Self Made Self-Made Score - 8 Residence - Medina, WA Citizenship - United States Marital Status - Married Children - 3 Education - Drop Out, Harvard University
#2 Carlos Slim Helu & family $50 Billion $77.1 Billion Honorary Chairman, América Móvil Age - 76 Source Of Wealth - telecom, Self Made Residence - Mexico City, Mexico Citizenship - Mexico Marital Status - Widowed Children - 6 Education - Bachelor of Arts / Science, Universidad Nacional Autonoma de Mexico
#3 Warren Buffett $60.7 Billion - 2015 Billionaires Net Worth $72.7 Billion CEO, Berkshire Hathaway Age - 86 Source Of Wealth Berkshire Hathaway, Self Made Self-Made Score - 8 Residence - Omaha, NE Citizenship - United States Marital Status - Widowed, Remarried Children - 3 Education - Bachelor of Arts / Science, University of Nebraska Lincoln; Master of Science, Columbia University
#4 Amancio Ortega $67.8 Billion 2015 Billionaires Net Worth $64.5 Billion Age - 80 Source Of Wealth - Zara, Self Made Residence - La Coruna, Spain Citizenship - Spain Marital Status - Married Children - 3
#5 Larry Ellison 2015 Billionaires Net Worth $43.7 Billion CEO and Founder, Oracle Age - 72 Source Of Wealth - Oracle, Self Made Self-Made Score - 9 Residence - Woodside, CA Citizenship - United States Marital Status - Divorced Children - 2 Education - Drop Out, University of Chicago; Drop Out, University of Illinois at Urbana
#6 Charles Koch $42.2 Billion CEO, Koch Industries Age - 81 Source Of Wealth - diversified Self-Made Score - 5 Residence - Wichita, KS Citizenship - United States Marital Status - Married Children - 2 Education - Bachelor of Arts / Science, Massachusetts Institute of Technology; Master of Science, Massachusetts Institute of Technology
#7 David Koch $42.2 Billion 2015 Billionaires Net Worth $42.9 Billion Executive Vice President, Koch Industries Age - 75 Source Of Wealth - diversified Self-Made Score - 5 Residence - New York, NY Citizenship - United States Marital Status - Married Children - 3 Education - Bachelor of Arts / Science, Massachusetts Institute of Technology; Master of Science, Massachusetts Institute of Technology
#8 Christy Walton & family $30.3 Billion 2015 Billionaires Net Worth $41.7 Billion Co-Chair, Children's Scholarship Fund Age - 68 Source Of Wealth - Wal-Mart Self-Made Score - 1 Residence - Jackson, WY Citizenship - United States Marital Status - Widowed Children - 1
#9 Jim Walton $33.2 Billion 2015 Billionaires Net Worth $40.6 Billion Chairman and CEO, Arvest Bank Group, Inc. Age - 67 Source Of Wealth - Wal-Mart Self-Made Score - 2 Residence - Bentonville, AR Citizenship - United States Marital Status - Married Children - 4 Education - Bachelor of Arts / Science, University of Arkansas
#10 Liliane Bettencourt & family $36.7 Billion 2015 Billionaires Net Worth $40.1 Billion Age - 93 Source Of Wealth - L'Oreal Residence - Paris, France Citizenship - France Marital Status - Widowed Children - 1