The Bay Area continues to be home to some of the nation's most expensive zip codes, as Atherton tops the nation with a median home value of $6.8 million. It comes as little surprise that the Peninsula suburb, a short drive away from the headquarters of tech giants like Facebook, Google and Box, also houses the lion's share of the region's most expensive home sales this year — seven properties costing buyers more than $16 million each.
Even as home sales slow, the median price for Bay Area home…
