 USA 10-cent postage stamp, 1973: "It all depends on ZIP code". Image by Bureau of Engraving and Printing. Designed by Randall McDougall., via Wikimedia Commons. Licensed Public domain |
The Zip CodesZIP Code ZIP Code Numeric postal code used in the US and its territories For other uses, see Zip code (disambiguation). The ZIP Code system (an acronym for Zone Improvement Plan[1]) is the system of postal codes used by the United States Postal Service (USPS). The term ZIP was chosen to suggest that the mail travels more efficiently and quickly[2] (zipping along) when senders include the code in the postal address. ZIP+4 is a registered trademark of the United States Postal Service, which also registered ZIP Code as a service mark until 1997,[3] and which claims "ZIP Code" as a trademark though it is not registered.[4] A 1974 postage stamp encouraging people to use the ZIP Code on letters and… (Source: Wikipedia)
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