The nation's wealthiest ZIP codes are concentrated mostly on the coasts, with California and New England playing host to some serious cash, according to a new report from the Atlantic's CityLab.

These ares are of course mostly blue and have for a long time leaned Democratic.

Thirty-three "ZIP codes have median home values of more than $2 million. Nearly all of these were located in the New York, Los Angeles, San Jose, or San Francisco metro areas, with 10 each in the New York metro and the combined San Francisco-San Jose Bay Area. There was one each in Boston, Miami, Santa Barbara, and San Diego,” the report notes, citing data collected by housing and real estate site Zillow.

“[T]hree of the top ten most expensive ZIP codes are in the Bay Area, including parts of Palo Alto, Atherton, and nearby Portola Valley. In this tech-rich region, two ZIP codes—94027 and 94304—have median home values, astonishingly, above $3 million,” the report added.

Here are the top 10 most expensive ZIP codes in the U.S. (Image courtesy the Atlantic):

So what are some of the takeaways?

"These data shed light on the huge gulf in housing values across the United States, one that indicates the staggering extent of its class divide. The neighborhoods where the super rich have homes represent just a tiny fraction of the places where Americans live," the report reads.

"These are really the 'one percent' of neighborhoods. These 201 richest ZIP codes with median home values of more than $1 million account for less than 1 percent of Zillow’s total sample. Only 4,220 ZIP codes — 19 percent of the total — have median home values of more than $250,000," the report added.

Also, I was a little surprised to see that Chicago didn't make a bigger dent.

You can read more here.