Mr. Zip, a gangly cartoonish figure with wide friendly eyes and a neat blue mail carrier's uniform, emerged fifty years ago to help the U.S. Postal Service promote its newest idea: five numbers added ...

Complaints about slow mail are nothing new. But now, a new U.S. Postal Service tracker lets you see delivery statistics for yourself. The dashboard, one of the reforms included in the Postal Service ...

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 ...

More dangerous heat waves are on the way: See the impact by Zip code. By mid-century, nearly two-thirds of Americans will experience perilous heat waves, with some regions in the South expected to ...

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 ...