An annual ranking of the most expensive zip codes of 2017 based on closed sales recorded in official records was released by Property Shark. Bay Area cities dominate the list with 45 zip codes. The #1 city is Atherton in San Mateo County, with a median sale price of $4,950,000.

Out of 110 cities, San Francisco County has the highest number of zip codes in the ranking with a total of 9 zip codes. California claims 77 zip codes on the list, followed by New York, which features 19 zip codes in the Property Shark ranking.

See the complete list here.

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