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The U.S. Postal Service had been providing a premium level "air mail" service since the introduction of regular air transportation. As air transportation reliability improved and cost per ounce of mail decreased, it began to make financial sense to transport larger quantities of mail via intercontinental airlines rather than ship, and interstate via the old airmail routes rather than via train.
A ZIP Code (an acronym for Zone Improvement Plan [1]) is a 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 use the code in the postal address .
There are generally two widely accepted versions of a postal code: a ZIP code and a ZIP + 4 code. Established in 1963, ZIP codes are the most common and recognizable postal code used by the USPS.
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 abandoned in 1939. The next country to introduce postal codes was Germany in 1941, [5 ...
The Postal Accountability and Enhancement Act (PAEA) or the Postal Act of 2006 is a United States federal statute enacted by the 109th United States Congress and signed into law by President George W. Bush on December 20, 2006. [1] It was meant to overhaul the United States Postal Service (USPS
Stampless letters, paid for by the receiver, and private postal systems, were gradually phased out after the introduction of adhesive postage stamps, first issued by the U.S. government post office July 1, 1847, in the denominations of five and ten cents, with the use of stamps made mandatory in 1855.
May only be required for bulk mail. The letters CP are frequently used before the postal code. This is not a country code, but an abbreviation for "codigo postal" or postal code. Curaçao: CW: no codes Cyprus: 1 October 1994 CY: NNNN The postal code system covers the whole island, but is not used on mail to Northern Cyprus. Northern Cyprus uses ...
The postal rate varied according to "distance zone", the distance a letter was to be carried from the post office where it entered the mail to its final destination. Rates were adopted in 1847 for mail to or from the Pacific Coast and in 1848 for mail sent from one place in the west to another place in the west.