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 ...

These days, we’re all accustomed to using the ubiquitous five-digit ZIP code. But it wasn’t always so. In fact, there were no ...

The House passed two bills Monday night that would authorize the U.S. Postal Service to create 76 new ZIP codes for communities nationwide. This is not the first proposed ZIP code upgrade. In December ...

Converting ZIP codes to latitude and longitude coordinates unlocks location functionality that ZIP code strings alone can’t support — distance calculations, radius searches, map markers, delivery zone ...

Everyone knows the ZIP code 90210—but what about these other notable codes around the country? The Zone Improvement Plan, otherwise known as the ZIP code, is the network of postal codes the U.S.