After the 5-digit ZIP code gets the mail to your local post office, the "plus 4" code gets it to your neighborhood. "Do you have to write it on your letters?" asked WCCO reporter Jason DeRusha.

How is it that a simple five-digit ZIP code provides any insight into who you are? After reading my recent article on how stores often ask for our ZIP codes to build marketing profiles, Michael ...

Removing the necessity of city and state on envelopes and packages, and leaving it to a formulaic five-digit zip code improved accuracy of mail sorting, and quite frankly, greatly improved the speed ...

The idea of a five-digit ZIP Code alone wasn't enough-it would be useless without a high adoption rate. And Day had been warned: executives at AT&T noted the difficulty they had in getting the ...

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 code was originally intended to allow mail sorting methods to be automated but ended up creating unimagined socio-economic benefits as an organizing and enabling device. The ZIP Code became ...

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 ...