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 ...
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 ...
The holidays were busy for mail carriers because we were busy sending packages with a familiar five-digit code. Our Planet Money team got curious, where did ZIP codes come from? Here's reporter Sally ...
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