Gary Fountain / For the Chronicle
No. 112: Richard Kinder (far right), 67, is worth an estimated $9.8 billion. Kinder made his money through his pipeline company Kinder Morgan.
Sharon Steinmann / Houston Chronicle
No. 219: Jeffrey Hildebrand, 53, is worth an estimated $5.5 billion. Hildebrand made his money with his energy company Hilcorp Energy. Hildebrand has had a big year in 2012 after Hilcorp sold several Gulf of Mexico assets for $550 million.
BRETT COOMER / SPECIAL TO THE CHRONICLE
No. 239: Dannine Avara (left), 48, is worth $5.1 billion. She is the daughter of the late Dan Duncan, who was the richest man in Houston. Duncan died in 2010.
No. 239: Scott Duncan, 29, is worth $5.1 billion, and he is the son of the late Dan Duncan, who was formerly the richest man in Houston. Duncan died in 2010.
No. 239: Milane Frantz, 42, is worth $5.1 billion, and she is the daughter of the late Dan Duncan, who was formerly the richest man in Houston. Duncan died in 2010.
Dave Rossman / For the Chronicle
No. 239: Randa Williams, 50, is worth $5.1 billion. She is the daughter of the late Dan Duncan, who was formerly the richest man in Houston. Williams is worth $3.4 billion, and she is currently the director at Enterprise Products.
Bill Olive / Bill Olive Photography
No. 503: John Arnold, 38, is worth an estimated $2.8 billion. Arnold made his money as the head of the hedge fund Centaurus Advisors. However, his early trading days started at Enron, where he traded oil for the energy company. Once the company collapsed, he went into business for himself.
Nick de la Torre / Houston Chronicle
No. 736: George P. Mitchell, 92, has been called the father of natural gas shale drilling. He was the first utilize horizontal drilling and hydraulic fracking to break open rock formations in Texas. He is worth an estimated $2 billion.
Mayra Beltran / Houston Chronicle
No. 831: Robert McNair, 75, is worth $1.8 billion, and he is known by most Houston residents as the owner of the Houston Texans. McNair made his fortune selling power operator Cogen Technologies to Enron in 1999.
Johnny Hanson / For the Chronicle
No. 882: Thomas Friedkin, 76, is worth $1.7 billion, according to Forbes. He made his money by having exclusive rights to import Toyota vehicles in Texas, Oklahoma, Louisiana Arkansas and Mississippi.
Dale Gerhard / Associated Press
No. 882: Tilman Fertitta, CEO of Landry's Inc. is worth an estimated $1.7 billion. He earned his money from his dining, hospitality and gaming company. He owns Bubba Gump Shrimp Company, Saltgrass Steakhouse and Landry's Seafood House.
Bill Olive / For the Chronicle
No. 974: Joe Jamail, 86, is worth $1.5 billion, and according to Forbes, he is the richest practicing lawyer in America. He built his business on personal injury lawsuits.
Dave Rossman / For the Houston Chronicle
No. 1,031: Fayez Sarofim is worth an estimated $1.4 billion. He made his wealth in money management.
Brett Coomer / Houston Chronicle
No. 1175: Bud Adams, 89, made his money $1.2 billion in the oil business, but he is best known as the owner of the Tennessee Titans. He moved the Houston Oilers to Tennessee in 1997.
No. 1268: Daniel Harrison III is worth an estimated $1.1 billion, according to Forbes. He made his wealth in the oil and gas business.
Cody Duty / Houston Chronicle
No. 831: Drayton McLane, 75, is worth an estimated $1.8 billion. He is best known around Houston as the former owner of the Houston Astros.
Ed Lallo / Bloomberg
No. 49: Michael Dell, 47, is worth an estimated $15.3 billion. He made his money on his computer company. Dell is a Houston native who now resides in Austin.
Chuck Burton / AP
No. 613: Mark Cuban, 54, is worth $2.4 billion, and he is best known for being the owner of the Dallas Mavericks. He isn't from Houston, but he is a NBA World Champion.
Vernon Bryant/staff Photographer / AP
No. 527: Jerry Jones, 69, isn't from Houston, but Houstonians love to hate him. Jones is worth $2.7 billion, but despite all that money, he still hasn't won a Super Bowl in years.
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Houston added one more resident to Forbes’ annual 400 Richest People in America list .
Pipeline mogul Richard Kinder, 66, ranked as the highest Houstonian with an estimated net worth of $6.4 billion. Tilman Fertitta, 55, made the list for the first time at 298 with an estimated worth of $1.6 billion.
Of the 13 on the list, they had a combine net worth of $46.4 billion, or roughly $3.57 billion a piece. Last year, the 12 Houstonians’ average net worth was $3.1 billion.
Ten Houstonians increased their net worth. Kinder saw the biggest rise as his net worth grew by more than $3 billion.
Bill Gates is again No. 1 with $66 billion. He’s followed by Berkshire Hathaway’s Warren Buffett with $46 billion and Oracle founder Larry Ellison with $41 billion. Hedge fund manager George Soros, who joined the Top 10 for the first time, dropped to 15th with an estimated worth of $19 billion, a lose of nearly $3 billion.
The list also featured five billionaires in the top 20 who don’t have a college degree.
Gates, who dropped out of Harvard, leads the list of billionaire drop outs. Ellison, who founded Oracle, dropped out of the University of Chicago and the University of Illinois at Urbana.
Here are some other notable college drop outs: Mark Zuckerberg, Harvard; Sheldon Adelson, City College of New York; Michael Dell, University of Texas at Austin.
For the full list go to: www.forbes.com/forbes400.