There is also another type of postal code, the ZIP + 4 code. According to unitedstateszipcodes.org, the ZIP + 4 was established in 1983 and identifies an even more specific location within a ZIP code.

The Postal Service’s plans will delay a third of mail in 27 states, according to a Washington Post analysis, hitting states west of the Rocky Mountains especially hard.

Since its inception in 1992, Green mayors have been frustrated by city's 6 ZIP codes that can place you in Uniontown or North Canton.

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.

See the impact by Zip code. 1 in 3 Americans may face risk by mid-century as winds are projected to reach further inland, northward By John Muyskens , Andrew Ba Tran ...

In postal circles, Robert Aurand Moon was known as “Mr. ZIP.”Mr. Moon, who invented the U.S. Postal Service’s ZIP code system and later was director of delivery services for the entire ...