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 ...

Fifty years ago this week, the U.S. Postal Service rolled out ZIP codes in an effort to make it easier to sort a surge in post-war mail. The humble addition of five digits to every address in the ...

Pro tip: Make sure the zip code is correct. The wrong zip code can get your item stuck in the system.

Today on All Things Considered, NPR's Andrea Seabrook reported that the U.S. Postal Service plans to launch next month a national "Portable ZIP Codes" program. Under the program, Americans would be ...

Well, we’re just zipping right through this series, no? So far we’ve looked at various postal machines and how they work to flip mail around, cancel the postage, and sort it, all in a matter of ...

Psst, your ZIP code is telling all your secrets. In fact, so much is hidden in that short string of digits at the end of your address – we're talking pride, discrimination and marketing gold. Starting ...

VENICE -- Their winter homes haven't moved, but some returning snowbirds may find themselves with a new ZIP code. The U.S. Postal Service has moved the boundary of 34285, the ZIP code traditionally ...