On July 1, 1963, the U.S. Post Office Department introduced the ZIP code program to get a handle on the heaping surplus of mail. Today, those five digits represent much more for American society. Back ...

One of the most important breakthroughs in modern communication lies in an overlooked place. It’s printed onto envelopes, just below the address. Although we think nothing of the ZIP Code these days, ...

We all have one, we know it by heart, and we share it with our neighbors. But chances are you haven't thought that much about this ubiquitous part of American life — the ZIP code. We all know about ...

The House passed two bills Monday night that would authorize the U.S. Postal Service to create 76 new ZIP codes for communities nationwide. These bipartisan bills, led by Rep. Mario Díaz-Balart (R-FL) ...

Over the summer, CBS News’s “Sunday Morning” did a piece celebrating the anniversary of the U.S. Zip code. A commercial explaining how to use the Zip code showed a sample letter addressed to “Anywhere ...