Mr. ZIP, informally "Zippy", was a cartoon character used in the 1960s by the United States Post Office Department, and later by its successor, the United States Postal Service, to encourage the ...

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.

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 ...