A Fairfield County town has tied Los Angeles with being named the country’s second most expensive city, according to a report by Property Shark.
Fairfield County’s record performance this year gave Connecticut the third-highest number of pricey zip codes, according to the report, trailing only New York and California. Of that, Greenwich contributed more top 100 zips (four) than New York City for the first time.
Greenwich’s Riverside neighborhood ranked #43, its highest in a decade, said the report, with a $2.75 million median sale price. Next was Old Greenwich at a record $2.65 million, up more than half a million year over year. The report said 06831 hit $2.54 million and 06830 reached $2.2 million.
Only Suffolk County in the Hamptons had a higher concentration of expensive zips in the New York metro area, with nine, including two top 10 entries, according to Property Shark.
Fairfield County’s record performance this year gave Connecticut the third-highest number of pricey zips, trailing only New York and California. (Property Shark)
In the rest of New England, New Hampshire outpriced Massachusetts for the first time. New Castle’s 03854 reached a $2.65 million median sale price, surpassing Boston’s 02199 at $2.57 million. Massachusetts’ zips have fallen with Back Bay being at its lowest in a decade at $2.57 million and the only Boston zip to rank this year. Massachusetts’ next priciest was Nantucket, down from last year’s $2.9 million to this year’s $2.5 million.
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At the top of the country?
Newport Beach, California is now the country’s most expensive city, with its entire residential area falling within the 100 priciest zips. Of the individual zip codes, Miami Beach’s Fisher Island became the country’s most expensive zip in 2025 with a $9.5 million median sale price, marking Florida’s first #1 finish.

