Here's where 16 of New York City's billionaires live

via The Real Deal

Here's a fun fact: New York City has more billionaires than any other city on the planet.

Last month, Forbes reported that 79 billionaires call the Big Apple home, besting Hong Kong, which has 68 members of the 10-digit-net-worth club, followed by Moscow with 60, Beijing with 51 and London with 48.

New York’s billionaires are worth a combined $364.6 billion, according to the magazine.

While many of NYC’s billionaires made their fortunes in finance and media, 11 of them built — or inherited — real estate empires, including Stephen Ross, Richard LeFrak, Donald Trump, Jerry Speyer, Leonard Stern, Sheldon Solow, John Catsimatidis, Jeff Sutton, Mortimer Zuckerman, David Walentas, Alexander Rovt and Leon Charney (who died last month). While their commercial holdings are well documented, their personal residences are less so.

This month, The Real Deal searched news reports and property records to map out where in Manhattan these billionaires rest their heads. While many of their homes were not publicly listed, below is a look at some of the most notable names and addresses we found.

1. Michael Bloomberg

Net worth: $40 billion

17 East 79th Street

Former NYC Mayor Michael Bloomberg — founder of the Bloomberg media empire — made headlines in 2002 when he rebuffed the chance to live at Gracie Mansion in favor of his Beaux-Arts townhouse on 79th Street. He reportedly paid $3.5 million for the five-story limestone mansion in 1986 and over the years has quietly bought out neighboring units at 19 East 79th to expand his 12,500-square-foot abode. The mega-townhouse is one of more than a dozen homes Bloomberg reportedly owns around the world.

2. David Koch

Net worth: $39.6 billion

740 Park Avenue

David Koch — one half of the Koch brothers, the politically conservative pair that have bankrolled conservative politicians and causes nationwide — reportedly shelled out $18 million in 2004 for an 18-room duplex at 740 Park, the exclusive building that Ronald Lauder, Stephen Schwarzman and other business magnates call home. The pad, formerly owned by the Japanese government, underwent a two-year renovation by edgy architect Peter Marino before Koch moved in with his family.

3. Rupert Murdoch

Net worth: $10.6 billion

One Madison Avenue; 278 West 11th Street

In February 2014, after splitting up with his now-ex-wife Wendy Deng (and their penthouse at 834 Fifth), the News Corp. mogul shelled out $57.3 million for two units at One Madison: a three-bedroom condo on the 57th floor intended as guest quarters and a 6,800-square-foot triplex penthouse. Murdoch was reportedly living in the three-bedroom unit while the penthouse was under construction. But in April, he put the penthouse back on the market for $72 million. Murdoch also paid $25 million in 2014 for a Greek Revival townhouse on West 11th Street that he temporarily had on the market, asking $29 million, though it’s unclear if he or anyone else was living there.