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 ...

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 ...

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 other day a tech savvy San Francisco woman logged onto to Fedex.com to schedule a package delivery. As she opened her account, the website asked her a series of multiple choice questions to ...

Car insurance is a necessary expense for drivers, but the cost can vary significantly depending on several factors. One factor that can have a surprising impact on your premium is your zip code.

Recently I wrote an article about why so many stores ask for your ZIP code at check-out. With your name and ZIP they can turn to outside data brokers to learn your address, phone number and email -- ...