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 Mabus.

Question: I live in Fox Crossing in Winnebago County, but the post office gave me an Appleton address with the 54914 ZIP code. If I order anything online, I end up paying the Outagamie County ...

MINNEAPOLIS (WCCO)-- They are the five numbers that stand for home. Since 1963, ZIP codes have been a part of just about every piece of mail that travels through our system. But what do those numbers ...

Almost everyone knows their five digit ZIP code, and probably a few others within their city, but what’s up with the extra four digits you sometimes see on mail? Let’s start with those first five ...

It’s one of the more intriguing zip codes in the country: 43210. Is it a countdown of sorts, often used in marketing campaigns? Or are the numbers a coincidental anomaly, with logic and reason being ...

The postal service may be in a financial vise right now, but 50 years ago it created an economic legacy, one now reportedly worth billions of dollars a year: On July 1, 1963, it introduced the ...

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 ...