| | 1 William Gates III 57.0 52 Medina, WA Microsoft |
| | 2 Warren Buffett 50.0 78 Omaha, NE Berkshire Hathaway |
| | 3 Lawrence Ellison 27.0 64 Redwood City, CA Oracle |
| | 4 Jim Walton 23.4 60 Bentonville, AR Wal-Mart |
| | 5 S Robson Walton 23.3 64 Bentonville, AR Wal-Mart |
| | 6 Alice Walton 23.2 59 Fort Worth, TX Wal-Mart |
| | 6 Christy Walton & family 23.2 53 Jackson, WY Wal-Mart inheritance |
| | 8 Michael Bloomberg 20.0 66 New York, NY Bloomberg |
| | 9 Charles Koch 19.0 72 Wichita, KS manufacturing, energy |
| | 9 David Koch 19.0 68 New York, NY manufacturing, energy |
| | 11 Michael Dell 17.3 43 Austin, TX Dell |
| | 12 Paul Allen 16.0 55 Seattle, WA Microsoft, investments |
| | 13 Sergey Brin 15.9 35 Palo Alto, CA Google |
| | 14 Larry Page 15.8 35 San Francisco, CA Google |
| | 15 Sheldon Adelson 15.0 75 Las Vegas, NV casinos, hotels |
| | 15 Steven Ballmer 15.0 52 Hunts Point, WA Microsoft |
| | 15 Abigail Johnson 15.0 46 Boston, MA Fidelity |
| | 18 Jack Taylor & family 14.0 86 St Louis, MO Enterprise Rent-A-Car |
| | 19 Anne Cox Chambers 13.0 88 Atlanta, GA Cox Enterprises |
| | 20 Donald Bren 12.0 76 Newport Beach, CA real estate |
| | 20 Carl Icahn 12.0 72 New York, NY leveraged buyouts |
| | 20 George Kaiser 12.0 66 Tulsa, OK oil & gas, banking |
| | 20 Forrest Mars Jr 12.0 77 McLean, VA candy, pet food |
| | 20 Jacqueline Mars 12.0 68 Bedminster, NJ candy, pet food |
| | 20 John Mars 12.0 72 Arlington, VA candy, pet food |