The world's ultra-wealthy primarily live in these 10 cities—only 3 are outside the U.S.

Nearly a fifth of the world's richest people live in just 10 cities worldwide, according to recent data from wealth intelligence platform Altrata.

The city with the most ultra-wealthy people — those with a net worth above $30 million — by a large margin: New York. It's home to 21,380 such residents, up 23% from 2024, according to the report, which contains data through June and was published on September 30. The report didn't specify whether that increase comes from ultra-wealthy people moving to New York, extant residents joining the ranks of the ultra-wealthy or both.

New York is one of the world's biggest financial hubs, meaning it may be close to work for many of the ultra-wealthy. Banking and finance is the most popular industry to work in for affluent people across all generations, according to the report.

Hong Kong, the city in the No. 2 spot, also has a growing population of ultra-wealthy people: approximately 17,215, up nearly 23% in the first six months of 2025, the report found. Like New York, Hong Kong has a booming finance industry. IPO valuations on the Hong Kong Stock Exchange jumped roughly eight times in the first half of 2025, up to $14 billion, according to a July CNBC report of data from financial markets platform Dealogic.