One of the most important breakthroughs in modern communication lies in an overlooked place. It’s printed onto envelopes, just below the address. Although we think nothing of the ZIP Code these days, ...

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. Back ...

ZIP Codes with post offices targeted for closure The U.S. Postal Service is considering closing more than 3,600 post offices nationwide. The points below are centered on the ZIP Codes where those ...

Nowadays, people don't send letters to one another when they want to catch up. You may get holiday or birthday cards from your parents, grandparents or other family members and friends, but for the ...

Today on All Things Considered, NPR's Andrea Seabrook reported that the U.S. Postal Service plans to launch next month a national "Portable ZIP Codes" program. Under the program, Americans would be ...

90210. SW19. 150-6110. What do these series of characters have in common? They're all postal codes in specific areas of major cities — Los Angeles, London and Tokyo, respectively, if you were ...

The Corona del Mar post office celebrated a once-in-a-century occurrence when the date matched its ZIP code on Friday.