Richard Kinder’s Houston home

Texas is home to 40 billionaires, according to Forbes’ recent 38th annual ranking of the world’s billionaires.

The richest of them is Walmart heiress and Fort Worth resident Alice Walton, ranked No. 11 overall with $38.4 billion. Coming in at No. 18 is former Houston resident, founder and CEO of Dell Technologies Michael Dell with $32.3 billion.

A number of very wealthy Houstonians also appear on the list, including pipeline mogul and former Enron COO Richard Kinder, with an estimated fortune of $7.5 billion.

After Kinder, the heirs to oilman Dan Duncan of Enterprise Products Partners had the largest fortunes; including Randa Duncan Williams, $6.3 billion; Milane Frantz, $6.3 billion; Scott Duncan, $6.2 billion; and Dannine Avara, $6.3 billion.

Houston Rockets owner Tilman Fertitta, at $4.9 billion, was the15th richest person in Texas and No. 140 in U.S.

Other Houstonians on the list include Dan Friedkin ($4 billion), owner and CEO of Golf States Toyota Distributors; Janice McNair ($3.8 billion), widow of Houston Texans founder Bob McNair; Jeffery Hildebrand ($3.8 billion), founder and CEO of Hilcorp Energy Company; John Arnold ($3.3 billion), founder of Houston-based hedge fund Centaurus Advisors LLC; and George Bishop ($2.4 billion), founder of GeoSouthern Energy.

Nationally, Amazon founder Jeff Bezos, with a fortune of $114 billion, topped the list, while Microsoft founder Bill Gates came in second at $106 billion. Berkshire Hathaway owner and CEO Warren Buffet was third at $80.8 billion and Facebook founder and CEO Mark Zuckerberg was fourth at $69.6 billion.

The most successful real estate mogul on the list was Newport Beach resident Donald Bren, chairman and owner of the Irvine Company, which owns more than 115 million square feet of real estate in California and New York.