From the Atlantic Cities:
Only twenty metropolitan areas — New York, Los Angeles, Chicago, Washington, San Francisco, Boston, Houston, Philadelphia, Dallas, Miami, Atlanta, San Jose, Seattle, Minneapolis, San Diego, Detroit, Phoenix, Baltimore, Bridgeport (Fairfield County, Connecticut, is the center of the hedge fund industry and home to many corporate headquarters), and Denver — have at least 1 percent of all the nation’s very high-income households. Collectively those areas account for 56 percent of the highest-income households but for only 37 percent of all households. Unsurprisingly, the New York metropolitan area has the largest number of very high-income households. Nearly 12 percent of top-income households live in the New York region, compared to about 7 percent of all households. Second-place Los Angeles is home to about 5 percent of the very rich, compared to about 4 percent of all households.
Where the 1% Live - Jobs & Economy - The Atlantic Cities