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Report: 5 of the country’s most expensive zip codes are in Massachusetts
Connecticut and New Hampshire also made the list, with Connecticut contributing a record seven zip codes.
Five of America’s most expensive zip codes are in Massachusetts, according to a report by PropertyShark.
The online real estate database released its 10th annual 100 most expensive zip codes in the U.S., which includes Boston at No. 54, Nantucket at No. 63, Chilmark at No. 64, Weston at No. 72, and Wellesley Hills at No. 80.
The nation’s priciest housing markets remain overwhelmingly coastal, according to the report. The PropertyShark list includes 15 states, and California once again dominated the luxury market with 61% of entries. Other New England states on the list are Connecticut and New Hampshire.
Greenwich, Connecticut’s 06878 is the highest ranking New England zip code on the list at No. 43.
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Boston’s 02199 zip code, which has appeared on the list seven times in the past decade, is at $2.57 million, roughly half of its 2021 peak, according to the report. Meanwhile, Nantucket’s 02554 zip code is at $2.5 million, a 14% year-over-year drop.
Two Massachusetts zip codes set new record highs: Chilmark’s 02535 zip code at $2.48 million and Weston’s 02493 zip code at $2.39 million. Another spot fell just short of a new record (by $50,000): the Wellesley Hills 02381 zip code at $2.25 million.
Connecticut has the third-highest number of pricey zip codes (behind only New York and California) with a record seven of the most expensive zip codes, beating Massachusetts for the first time.
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Another first: New Hampshire’s most expensive zip code is pricier than the most expensive zip code in Massachusetts. New Castle’s 03854, at No. 50, reached a $2.65 million median sale price, beating out Boston’s 02199 at $2.57 million.
The No. 1 most expensive zip code in America is Miami Beach’s Fisher Island (33109), with a $9.5 million median sale price. It is the first time Florida has topped the list.
To comprise the list, PropertyShark analyzed registered residential transactions for condo, co-op, and single- and two-family home sales that closed between Jan. 1, 2025 and and Sept. 30, 2025.
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