postal codes: Quick Facts

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Facts

Also Known As	postcode

Photos and Videos

United States Postal Service letter carrier

A sealed envelope with a red wax stamp is overlaid with lit birthday candles shaped as the numbers 2, 5, and 0, in front of a faded background showing a mailbox and a postal worker in a mail truck.

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ZIP Code Today in History—July 1: The ZIP Code’s Rocky Introduction mail sorting postal system franking Today in History—July 26: The USPS’s Revolutionary Origins Today in History—April 3: The First Ride of the Pony Express mail