Where $5 Million Is a Starter Home
The median home value in the United States crossed $420,000 in 2025. In America's priciest ZIP codes, that number would barely cover a down payment. A small cluster of ZIP codes — concentrated in Silicon Valley, coastal California, the New York metro, and a handful of resort markets — have median home values above $3 million, with individual sales routinely breaking $10–30 million.
This ranking draws on Zillow Research, CoreLogic transaction data, and Census Bureau American Community Survey estimates updated for 2025–2026. You can look up any ZIP code directly to see its current housing data.
The Top 20 Most Expensive ZIP Codes by Median Home Value
| Rank | ZIP | City / Community | State | Median Home Value |
|---|---|---|---|---|
| 1 | 94027 | Atherton | CA | $7,900,000 |
| 2 | 93108 | Montecito | CA | $6,100,000 |
| 3 | 94957 | Ross | CA | $5,800,000 |
| 4 | 10007 | Tribeca / Lower Manhattan | NY | $5,400,000 |
| 5 | 94022 | Los Altos Hills | CA | $5,200,000 |
| 6 | 07620 | Alpine | NJ | $4,700,000 |
| 7 | 33109 | Fisher Island | FL | $4,500,000 |
| 8 | 90210 | Beverly Hills | CA | $4,200,000 |
| 9 | 94028 | Portola Valley | CA | $4,100,000 |
| 10 | 10013 | SoHo / Tribeca | NY | $3,900,000 |
| 11 | 06830 | Greenwich | CT | $3,700,000 |
| 12 | 33480 | Palm Beach | FL | $3,500,000 |
| 13 | 94920 | Belvedere / Tiburon | CA | $3,400,000 |
| 14 | 02493 | Weston | MA | $3,100,000 |
| 15 | 94070 | San Carlos Hills | CA | $2,950,000 |
| 16 | 10014 | West Village | NY | $2,900,000 |
| 17 | 85253 | Paradise Valley | AZ | $2,800,000 |
| 18 | 06883 | Weston | CT | $2,750,000 |
| 19 | 10021 | Upper East Side | NY | $2,700,000 |
| 20 | 92657 | Newport Coast | CA | $2,650,000 |
Silicon Valley's Stranglehold on the Top Rankings
Seven of the top fifteen ZIP codes by median home value are in the San Francisco Bay Area. This is not accidental. The combination of severe land-use restrictions, proximity to the world's highest-concentration tech industry, and decades of compounding appreciation has created a real estate market with no national peer.
Atherton (94027) has topped most expensive ZIP rankings for fifteen consecutive years. The roughly 7,000-person town has large lot minimums, no commercial development, and a resident roster that reads like a Who's Who of Silicon Valley: Oracle's Larry Ellison, Google's Eric Schmidt, and scores of venture capital partners have called it home. The median lot size exceeds one acre.
Portola Valley (94028) and Los Altos Hills (94022) share Atherton's character: extreme lot minimums, no apartments, equestrian easements on many parcels, and a population that skews toward senior tech executives and retirees from the industry.
The New York Entries: Density at a Premium
New York's expensive ZIP codes tell a different story — not sprawling estates but ultra-premium density. Tribeca (10007, 10013) converted from 19th-century manufacturing warehouses into some of the most coveted residential loft space in the world. A 4,000-square-foot Tribeca loft can command $10–15 million.
The Upper East Side (10021) represents old-money Manhattan: prewar co-op buildings with strict board approval requirements, proximity to Central Park and Museum Mile, and a cultural character distinct from newer luxury neighborhoods.
Florida's Ultra-Luxury Outliers
Fisher Island (33109) is technically an island off Miami accessible only by private ferry or boat, with a population under 1,000 and an average income that ranks among the highest of any Census tract in America. Palm Beach (33480) has been a preserve of old American wealth since the early 20th century, with estates owned by the same families for generations.
What Actually Drives Extreme Prices
The most expensive ZIP codes share several structural factors:
- Severe supply restriction: Zoning minimums, historic preservation rules, geographic constraints (water, mountains), or homeowner opposition to new construction cap supply absolutely
- Proximity to extreme wealth-generating industries: Tech, finance, and entertainment create a class of buyers for whom $5–10 million is a reasonable housing budget
- Status signaling: The address itself carries social meaning that buyers price in — "I live in Atherton" or "I live in Tribeca" communicates something
- Quality of public amenities: Top-rated schools, well-maintained parks, low crime — local government quality is partly bought through high property taxes on expensive real estate
- Global buyer demand: The most expensive ZIP codes attract international wealth seeking dollar-denominated safe haven real estate
Fastest-Rising Expensive ZIPs in 2025–2026
While the traditional luxury ZIPs remain at the top, some newer entrants are rising fast:
- Austin's 78746 (Westlake Hills): Tech migration from California drove this west Austin ZIP into top-20 national territory by 2024
- Miami Beach 33139: International capital inflows and the post-COVID "Miami moment" pushed South Beach prices to levels rivaling Manhattan
- Scottsdale 85255: DC Ranch and Silverleaf communities have created a new luxury tier in the Arizona desert market
The Bottom Line
America's most expensive ZIP codes are not just expensive neighborhoods — they are functionally separate housing markets operating under different rules of supply, demand, and buyer motivation than anywhere else. Understanding them requires understanding the industries and wealth dynamics behind them, not just counting bedrooms and square footage.
Use our ZIP code comparison tool to stack any two markets side by side on income, housing costs, and demographic data.