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 ...

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 ...

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.

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 ...

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.

Today marks the 50th anniversary of the Zone Improvement Plan, the network of ZIP codes we use for everything from mail delivery to credit card security. The U.S. Postal Service began using the ...