Extreme Wealth Concentrated by ZIP Code
In a country where the median household income is approximately $75,000, certain ZIP codes stand apart with median incomes exceeding $250,000 — more than 3x the national figure. These ultra-wealthy enclaves are clustered along the coasts, in suburbs of major financial and tech centers, and in resort communities. They share common characteristics: excellent schools, extremely low crime rates, high property values, and a concentration of executives, financial professionals, tech entrepreneurs, and inherited wealth.
Top 25 Wealthiest ZIP Codes
| Rank | ZIP Code | Location | Median HH Income | Median Home Value |
|---|---|---|---|---|
| 1 | 94027 | Atherton, CA | $450,000+ | $7,200,000 |
| 2 | 33109 | Fisher Island, FL | $440,000+ | $5,500,000 |
| 3 | 07620 | Alpine, NJ | $400,000+ | $4,200,000 |
| 4 | 10065 | Upper East Side, NYC | $380,000+ | $3,500,000 |
| 5 | 94028 | Portola Valley, CA | $370,000+ | $5,800,000 |
| 6 | 94010 | Hillsborough, CA | $360,000+ | $5,200,000 |
| 7 | 90077 | Bel Air, Los Angeles | $350,000+ | $4,800,000 |
| 8 | 02199 | Back Bay, Boston | $340,000+ | $2,800,000 |
| 9 | 10007 | Financial District, NYC | $330,000+ | $2,500,000 |
| 10 | 33480 | Palm Beach, FL | $320,000+ | $4,500,000 |
Common Characteristics
The wealthiest ZIP codes share several traits beyond high incomes. Schools rank in the top 5% nationally with per-pupil spending 2-3x the national average. Crime rates are 60-90% below the national average — some of these ZIP codes record fewer than 5 violent crimes per year. Property taxes are high in absolute dollars but represent a smaller share of home values than middle-income areas. Demographic composition tends toward older homeowners (45-65) with advanced degrees and high-skill professional occupations.
Regional Patterns
Silicon Valley ZIP codes dominate the top 10 due to tech wealth concentration. The 94027 (Atherton) ZIP code has been America's most expensive for over a decade, populated by tech executives and venture capitalists. New York metro ZIP codes rank high due to finance industry compensation. South Florida (Palm Beach, Fisher Island) attracts retirees and tax refugees from high-income-tax states. Connecticut's Gold Coast (Greenwich, Darien, New Canaan) has historically been among the wealthiest, though some ZIPs have declined slightly as financial industry jobs shifted to New York City.
What Money Buys in These ZIP Codes
In Atherton (94027), the median home is a 5-bedroom estate on 1+ acres with a pool, valued at $7.2 million. In Fisher Island (33109), residents live on a private island accessible only by ferry, with a residents-only beach club, marina, and golf course. Alpine, NJ (07620) offers 5-10 acre estates 30 minutes from Manhattan with complete privacy. These communities offer a level of exclusivity, space, and amenity access that cannot be replicated at any price in denser urban environments. Explore detailed demographic and income data for any ZIP code in our lookup tool.