Report: Almost one-third of nation's most expensive zip codes are in the Bay Area

PropertyShark released its annual ranking of the 100 priciest zip codes in the United States and it shows homes in the Bay Area are among the most expensive in the nation, though Atherton lost its top spot for most expensive in the country. 

The Bay Area retained the largest number of high-value zips with 32 in total, but continued to contract from its pre-pandemic peak. 

After eight consecutive years as the country’s most expensive zip code, Atherton’s 94027 lost its leading spot as Fisher Island, Fla. moved to the top spot. Still, Atherton posted a modest 5% gain from 2024 to set a new pricing record at $8.33 million. The Bay Area billionaire enclave’s cheapest home sale was $3.2 million this year, while its upper limit was $51.5 million.

In one of this year’s biggest jumps, Marin County’s Stinson Beach surged 38% year over year (or nearly $1.5 million) to break into the top 10 for the second time, following its 2023 debut. What’s more, its record-setting median sale price was also the first time that the Bay Area community surpassed $5 million.

Los Altos reached a new pricing tier this year with its median exceeding $5 million for the first time. Moreover, 94022 is one of 15 Santa Clara County zip codes in the top 100, making this the country’s second-most-expensive county by a wide margin, according to the report.

San Jose remains the most inland city with multiple top-100 zips, reflecting its high incomes and limited supply. Its leader, 95129, reached a $2.59 million median sale price. Still, the Bay Area’s dominance continues to fade: 32 zips ranked in 2025, below its 2019 record of 55.

The change is most visible in San Francisco itself, which now has only one top-100 zip. The Marina District and Cow Hollow’s 94123 shared the #74 position with Mountain View’s 94040, both at $2.35 million. For context, San Francisco ranked 13 zips nationally back in 2019, highlighting how the city’s luxury market has stagnated, the report noted.

The full report is here: https://www.propertyshark.com/Real-Estate-Reports/most-expensive-zip-codes-in-the-us/.