California Now Home to 7 Most Expensive Zip Codes in the US: Report

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A For Sale sign is posted in front of a home for sale in San Marino, California on September 6, 2023. With US mortgage rates rising to 15-year highs hovering around 7.2% to start the post-Labor Day period, the difference between new 30-year home loan rates and on all outstanding US mortgage debt has not been this wide since the 1980s. (Photo by FREDERIC J. BROWN/AFP via Getty Images)

California is now home to seven of the most expensive ZIP codes in the United States, according to a new report.

Real estate data firm PropertyShark conducted a study of the US real estate market with the aim of determining which zip codes are the most expensive in the country this year. To be specific, the team examined year-to-date closed residential sales, which means the prices reflect expectations from sellers.

The 10 most expensive zip codes had homes with median sale prices of at least $4 million. Of those zip codes, seven are located in California, the report noted.

Which CA Zip Code Has the Most Expensive Homes?

Topping the list was Atherton in San Mateo County, with the zip code 94027. Atherton has held the top spot for the eighth year in a row.

Median home prices in the zip code are at $7.9 million, based on sellers' expectations. For perspective, the median home sale price based on market trends was $5,612,500, per Redfin.

That said, the price of homes in Atherton fell by 5% or roughly $400,000 this year from 2023.

Other CA zip codes with the most expensive homes include Santa Barbara County (93108); Newport Beach (92661, 92657, and 92662); Rancho Santa Fe (92067); and Santa Monica (90402).

10 US Zip Codes With the Most Expensive Homes

1. Atherton, CA

Zip Code: 94027

County: San Mateo County

Median Sale Price in 2024: $7,900,000

2. Sagaponack, NY

Zip Code: 11962

County: Suffolk County

Median Sale Price in 2024: $5,950,000

3. Water Mill, NY

Zip Code: 11976

County: Suffolk County

Median Sale Price in 2024: $5,885,000

4. Santa Barbara, FL

Zip Code: 33109

County: Miami-Dade County

Median Sale Price in 2024: $5,750,000

5. San Barbara, CA

Zip Code: 93108

County: Santa Barbara County

Median Sale Price in 2024: $5,052,000

6. Newport Beach, CA

Zip Code: 92661

County: Orange County

Median Sale Price in 2024: $4,763,000

7. Newport Beach, CA

Zip Code: 92657

County: Orange County

Median Sale Price in 2024: $4,720,000

8. Newport Beach, CA

Zip Code: 92662

County: Orange County

Median Sale Price in 2024: $4,650,000

9. Rancho Santa Fe, CA

Zip Code: 92067

County: San Diego County

Median Sale Price in 2024: $4,550,000

10. Santa Monica, CA

Zip Code: 90402

County: Los Angeles County

Median Sale Price in 2024: $4,410,000

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