2 CT ZIP Codes Among 100 Most Expensive In Country, New Study Shows

CONNECTICUT — PropertyShark, a real estate data company, has released the top 100 most expensive ZIP codes in the U.S., and two neighborhoods in Connecticut have made the list.

The annual ranking placed the Riverside section of Greenwich — the 06878 ZIP code — 60th on the list with a median sale price of $2.2 million.

According to Property Shark, Riverside saw the most substantial increase in the median sale price in New England and the fourth-most significant across the nation. Last year, Riverside was ranked No. 99.

The Greenwich ZIP code of 06830 was ranked 93rd on this year's list with a median sale price of $1.89 million.

In order to determine the most expensive ZIP codes, PropertyShark said that it considered all home transactions that were closed between set dates in January and October of last year.

And if you're curious, No. 1 on the list is Atherton, Calif. (94027) with a median home sale price in 2023 of $8.3 million. Beverly Hill was No. 5 at $4.8 million. Miami Beach, Florida was No. 3 at $5.5 million.

The full "100 Most Expensive U.S. Zip Codes in 2023" report can be found here.

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Property Shark says they "calculated median sale prices based on closed home sales, not asking prices, as we consider this methodology to provide the most accurate picture of actual market dynamics. Whereas asking prices reflect sellers wishes, calculating medians based on sale prices reflects the transactional reality on the ground."

California claimed 79 of the most expensive ZIP codes in the country — the most of any state — including the top spot with Atherton, Calif., at a median sale price of $8.3 million.

New York had the second most with 22 ZIP codes making the list.

See Property Shark's full list of rankings and details about the methodology here.