Irvine Company Chairman Donald Bren is ranked No. 71 on a list of the world’s wealthiest individuals released last week by Bloomberg Markets.

The list is the first by the magazine, and was compiled for its December issue.

Bren’s wealth is estimated at $12.8 billion on the list, which was topped by investor Carlos Slim of Mexico, at $77.5 billion.

Bren is the wealthiest individual in Orange County. The Business Journal estimated his wealth at $13 billion in our annual OC’s Wealthiest issue in August.

He is the lone OC representative on Bloomberg’s list, which includes 200 entries and has a cutoff of $5.8 billion.