List of countrys most expensive zip codes reveals an out of control housing crisis 13 of them are in san francisco across california 91 zip codes appeared on the list. The most expensive zip code in the country was in atherton california about 30 miles south of san francisco where the median sale price was 705m up 5 from the year before california had . This is the most expensive zip code in california and its not in san francisco or la published thu may 10 2018 933 am edt updated wed jan 16 2019 1243 pm est shawn m carter shawncarterm. Two zip codes 94129 and 94130 didnt make the list due to lack of home sales nothing soothes our end of summer blues like a new zip code ranking in sunny california this time weve zoomed in on san franciscos priciest zip codes for homebuyers. 7 marin county zip codes among most expensive during pandemic san rafael ca a study looking at home sales from march 13 to sept 7 identified seven marin county zip codes among the 125 priciest