Q. My company’s mailing list, which is in Excel, has thousands of names and addresses, and many of these contacts contain a nine-digit ZIP code. My manager wants to convert those with a nine-digit ...

Once at the postal service, a bar code sorter and an optical character reader — two pieces of equipment run by a computer — then sort letters based on the last four zip code digits.

The 54915 ZIP code can indicate Calumet and Outagamie counties, which have a 0.5% sales tax, but also Winnebago County, which doesn't have the tax.

The House passed two bills Monday night that would authorize the U.S. Postal Service to create 76 new ZIP codes for communities nationwide.  These ...

Norfolk, Va. – Effective immediately, anyone sending mail to Navy mobile units must use a nine-digit ZIP code to ensure delivery, according to a message released by Secretary of the Navy Ray ...