Miami’s 33109 now America’s most expensive ZIP code

In a surprising shift in the U.S. luxury real-estate landscape, ZIP code 33109 on Fisher Island near Miami has emerged as the most expensive ZIP code in the country – dethroning long-time leader ZIP code 94027 in Atherton, California.

According to recent data, the median sale price in 33109 has surged to about $9.5 million, marking one of the largest year-over-year increases of any ultra-luxury market. This coastal enclave’s steep prices reflect its extreme exclusivity: the island is accessible only by ferry, boat or helicopter, and caters predominantly to ultra-high-net-worth buyers.

Meanwhile, California continues to dominate the broader top-10 list: seven of the nation’s ten most expensive ZIP codes still fall within the Golden State, underscoring its ongoing stronghold in luxury real estate. However, the shift at the very top hints at changing preferences among the ultra-rich, as lifestyle, climate and tax-benefit factors increasingly influence their location choices.

Analysts say the rise of 33109 signals two key trends. First, ultra-exclusive enclaves outside traditional luxury hubs (California and New York) are gaining in appeal. Second, scarcity combined with high-end amenities—private ferry access, beachfront location, seclusion—can rapidly push prices upward in top-tier markets.

For buyers, investors and real-estate watchers, the ranking change reminds us that luxury hotspots can evolve quickly. While California remains a dominant force, Florida’s ultraluxury market has captured the top spot—for now.