California, New York, and Florida contain the most expensive real estate in the United States, but home prices alone do not capture ZIP-code prosperity. Mountain West states lead on an alternative prosperity metric. Analysis used four sets of income and housing data plus an Economic Innovation Group study to map affluence. Mean household incomes are extremely high in enclaves such as Miami Beach-Fisher Island, where the 2023 mean approached $800,000. Other top-earning ZIP codes cluster in downtown New York and affluent tri-state suburbs. Some ultra-wealthy ZIP codes appear in unexpected places, including Kelly, Wyoming, and Glenview, Kentucky. Measures of wealth concentration differ across areas.
Beachfront neighborhoods in the Hamptons. An exclusive island off the coast of Miami. Palm tree-dotted communities with views of the Pacific Ocean. These are some of the places we think of as the most affluent in the country, but how you define and measure that affluence matters. Some of the most thriving neighborhoods in the country are in places you might not expect.
To determine which areas top the list of highest incomes, Business Insider analyzed Census Bureau data on mean household incomes across all zip codes in the US that have at least 100 households. Leading that list was the Miami Beach-Fisher Island area, an exclusive, ultrawealthy enclave in the Sunshine State. The mean household income there was just under $800,000 as of 2023.
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