For some credit card purchases in Canada, a postal code is required as a security measure. If using a credit card in the U.S., you may need to use a ZIP code instead. Many or all of the products on ...

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 ...

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 ...

An early first anniversary present for some residents of Estero is being delivered, courtesy of the United States Postal Service. The Postal Service has approved using Estero as a mailing address, ...

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 ...