Like our social security numbers, birth dates, and phone numbers, our ZIP codes are one of many seemingly random number sequences etched in our minds. But, for the most part, the only people who know ...

The humble ZIP Code shows up in all kinds of surprising places. Planet Money looks at how it was born, how it transformed the mail and talks to one researcher who argues that it's gone too far. The ...

Mr. Zip, a gangly cartoonish figure with wide friendly eyes and a neat blue mail carrier's uniform, emerged fifty years ago to help the U.S. Postal Service promote its newest idea: five numbers added ...

The ZIP code is less like a cold, clinical, ordered list of numbers, and more like a weird overgrown number garden. It started as a way to... ZIP Codes! The ZIP code is less like a cold, clinical, ...

You might not feel so friendly with your neighbors across the street if you found out they're paying $410 less in annual car insurance premiums -- even though everything about you and your neighbor is ...