"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."
"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."
Fisher Island (ZIP 33109) recorded a 2025 median home sale price of $9.5 million and displaced Atherton as the nation's most expensive ZIP code. Atherton (ZIP 94027), home to residents like Steph Curry and Eric Schmidt, posted a 2025 median of $8.3 million, a 5% rise from 2024; its lowest 2025 sale was $3 million and the highest a 2-acre former Stephen Luczo estate at $51.5 million. Southern California's Newport Beach dominated statewide rankings with six ZIP codes in the top 100, including notable gains in 92661, 92657, and Balboa Island's 92662. Montecito remained among the top locales.
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