Why America’s Wealthiest Zip Codes Are Getting Richer While Its Poorest Are Getting Left Entirely Behind

A twenty-minute drive outside of nearly every major American city reveals a shift in the nation’s character that is difficult to quantify in census data. The lawns become thinner. The supermarkets shrink. A pharmacy becomes a dollar store before closing completely. It’s the kind of change you experience before you can identify it, and once you do, you begin to notice it everywhere.

For many years, economists dismissed this type of irregularity as background noise that would eventually be eliminated by the next expansion. That presumption hasn’t held up over time. According to the Economic Innovation Group’s Distressed Communities Index, which was published following the official end of the previous recession, the wealthiest zip codes in the nation were declining at a rate that appeared almost deliberate. While large portions of the Midwest and the rural South either remained motionless or regressed, Arlington, San Francisco, portions of Manhattan, and a few suburbs outside of Boston were all rising.

The numbers can be read in two different ways. According to the optimistic version, cities prosper when talent and capital concentrate, and the rest eventually catches up. The skeptical version, which seems more in line with what is actually seen on the ground, claims that no one turned on the catching-up phase again after it stopped occurring sometime in the late 1970s. The second view was strongly supported by Robert Manduca’s Harvard research. He discovered that the percentage of Americans who lived in areas that were either notably rich or notably poor had almost tripled, based on data spanning forty years. Geographically, the middle was becoming thinner.

This is peculiar in some way. Individual income disparity is a topic that is frequently discussed. Less so is the disparity between locations. However, the two are intertwined in ways that are significant for daily life. When a $400,000 software engineer purchases a home in a city where teachers and electricians once resided, the neighborhood’s impoverished residents don’t simply vanish; instead, the schools and rents shift. They end up somewhere, which is frequently a community that is already experiencing a labor shortage.

More than 50 million Americans reside in zip codes where more than 25% of people live in poverty, where there are more vacant homes than new ones, and where job growth between recovery years is hardly noticeable, according to the Distressed Communities Index. Of those zip codes, only two out of five experienced any increase in employment. It’s difficult to ignore how infrequently those locations are mentioned in political speeches about the prosperity of the United States.

The cultural abbreviation for all of this is “the rich are getting richer and the poor are getting poorer,” which is somewhat inaccurate but still true. The more straightforward explanation could be that, unlike a generation ago, prosperity has become geographic. Better schools, denser employment networks, faster broadband, and other small benefits compound to give a child born in the right zip code a kind of soft tailwind. The gap between those two starting lines continues to widen, and a child born five miles in the wrong direction receives the opposite.

It’s really unclear if anything can undo this. Opportunities were meant to be redistributed by remote work, but this was largely not the case. Place-based federal programs come and go. It appears that investors think the superstar-city model will last forever. Perhaps it is. Even though no one is calling it that out loud, there’s a sense that the nation is subtly choosing who gets to take part in its next chapter as you watch the map fill in with deeper reds and brighter greens every few years.