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By the early 1960s, a more organized system was needed, and non-mandatory five-digit ZIP Codes were introduced nationwide on July 1, 1963. The USPOD issued its Publication 59: Abbreviations for Use with ZIP Code on October 1, 1963, with the list of two-letter state abbreviations which are generally written with both letters capitalized. [9]
These developed into postal codes as they are defined today. The name of US postal codes, "ZIP Codes", reflects this evolutionary growth from a zone plan to a zone improvement plan, "ZIP". Modern postal codes were first introduced in the Ukrainian Soviet Socialist Republic in December 1932, [4] but the system was
Established in 1963, ZIP codes are the most common and recognizable postal code used by the USPS. The ZIP stands for Zone Improvement Plan; the codes were invented to help the postal service ...
1963 - United States introduces the ZIP Code. 1963 1 February - British Antarctic Territory issues its first stamps. 1963 12 December - Kenya issues its first stamps. 1964 - First stamps issued by independent Republic of Malta. 1964 - 9 February - Sierra Leone issues the world's first self-adhesive stamps. 1964 30 March - Abu Dhabi issues its ...
In 1944, Moon submitted his idea for the "ZIP Code" while working as a postal inspector in Philadelphia, but no action was taken. [2] Following his third submission of the concept, in 1963 it received the approval of a top-level postal service committee which shares credit for further development of the Zoning Improvement Plan, "ZIP". Mr.
Area codes with the middle digit 0 were assigned to numbering plan areas that comprised an entire state or province, while jurisdictions with multiple numbering plan areas received area codes having 1 as the second digit. This pattern lasted only until 1956, when New Jersey's "201" was divided.
The Prominent Americans series superseded the "Liberties" in the 1960s and proved the last definitive issue to conform to the Universal Postal Union color code. In the 1970s, they were replaced by the Americana series, in which colors became purely a matter of designer preference. 1973 "Love" stamp
On 1 July 1963, five-digit ZIP codes were introduced nationwide by the United States Post Office Department (USPOD). In 1983, nine-digit ZIP+4 codes were brought about as an extra identifier in more accurately locating addresses.