Atherton, home to famous residents like NBA star Steph Curry and former Google CEO Eric Schmidt, has long reigned as the nation’s most expensive ZIP code. But after eight years of dominance, the small, wealthy Bay Area enclave has finally been dethroned.
Fisher Island, Florida, took the top spot on this year’s recently released list of most expensive ZIP codes in the nation, according to PropertyShark. The island, accessible only by a ferry or private boat with pre-approved clearance, off the coast of Miami (ZIP code 33109) had a 2025 median home sale price of $9.5 million, beating out Atherton’s 2025 median price of $8.3 million. That’s despite a 5% growth in average price from 2024 for the Silicon Valley town.
Coming in second doesn’t make Atherton (ZIP code 94027) an affordable place to live, though. For perspective, the cheapest home sold in 2025 so far went for $3 million. Meanwhile, the most expensive home, a 2-acre property formerly owned by tech CEO Stephen Luczo, changed hands for $51.5 million.
Statewide, Southern California’s Newport Beach dominated in the rankings again. In 2024, three of its ZIPs were in the top 10, and that’s the case once again. But 92661 jumped up to no. 4 from no. 6, due to a huge 20% year-over-year median price increase. The median sale price of $5.7 million is nearly $1 million more than it was in 2024.
Newport Beach’s 92657 ZIP code came in at no. 8 with a median sale price of $5.2 million, while the coastal city’s 92662 ZIP code ranked no. 9. That ZIP code, encompassing Balboa Island, saw its median price grow almost 10%, hitting $5.1 million this year. In aggregate, this makes Newport Beach the most expensive place in the U.S., as all six city ZIP codes made the top 100.
The celebrity-loved Central Coast community of Montecito, most recently of Harry and Meghan fame, (ZIP 93108) was no. 6 on the list, with a median sale price of $5.2 million. It’s been steadily in the top 10, but the tiny Bay Area coastal town of Stinson Beach made a huge leap this year to no. 7. The median sale price there jumped 38% since 2024 to $5.2 million. Los Altos, Calif., another Silicon Valley hub loved by billionaires like Google co-founder Sergey Brin and NVIDIA CEO Jensen Huang, tied Newport Beach’s 92662 ZIP at no. 9 with a median price of $5.1 million.
Elsewhere in the state, luxe San Diego suburb Rancho Santa Fe dropped down one spot from 2024 to the tenth most expensive ZIP code, with a 2025 median home price of $5 million.
Overall, California captured 61% of the top 100 ZIP codes.
Even with 2025’s devastating Los Angeles fires that pushed Pacific Palisades’ 90272 median price down 20% year over year, the city was still the second most expensive one in the country. It had seven of the top 100 ZIPs, and was buoyed by luxury areas like Bel-Air (90077) and the ever-popular 90210 (Beverly Hills).
San Francisco only had one ZIP code in the top 100 in this year’s report, with the Marina and Cow Hollow’s 94123 averaging a $2.4 million sale price. The city by the bay’s prices haven’t risen nearly as much as other U.S. cities since the pandemic – in 2019, 13 of the top 100 were in San Francisco.
The Bay Area still has 32 of the highest-valued ZIP codes in the country, but that number has steadily fallen in recent years. Fremont, known for being home to California’s largest Tesla factory and for once being crowned the happiest city in the country, has the cheapest ZIP code on the list, with a median sale price of $2 million.
PropertyShark analyzed residential sales closed between January 1, 2025, and September 30, 2025 to compile the report.
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This article originally published at 8 California ZIP codes among most expensive in the US.
