Most Americans know their ZIP code by heart. They type it into online forms, scribble it on envelopes and memorize it as part of their address. But not everyone knows the original meaning of the term.

CLEVELAND, Ohio - Housing in Cleveland and its surrounding counties has been in flux lately. Home prices are surging. But another factor is whether there are even enough homes available. Available ...

The most prosperous parts of the U.S. have recovered nicely from the 2008 financial crisis, but many other places remain mired in high unemployment and poverty, according to a report measuring wealth ...