The familiar five-digit number was part of a nationwide effort to modernize the mail.

There is still a feeling of excitement when you get something in the mail, or rather when you get something in the mail that is not a credit card bill. Unfortunately, credit cards, and paying for them ...

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 House passed two bills Monday night that would authorize the United States Postal Service to create 76 new ZIP codes for communities around the country. These two bipartisan bills, led by Rep.