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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. Introduced on July 1, 1963, the basic format comprised five ...
0. POSTNET (Post al N umeric E ncoding T echnique) is a barcode symbology used by the United States Postal Service to assist in directing mail. The ZIP Code or ZIP+4 code is encoded in half- and full-height bars. [ 1 ] Most often, the delivery point is added, usually being the last two digits of the address or PO box number.
In a database, storing the ZIP+4 code in a 10 character field (with the hyphen) allows easy output in the address block, and storing the check digit in a 3-digit field (instead of calculating it) allows automatic checking of the validity of the ZIP+4 and delivery point fields in case one had been changed independently.
NNNNN, NNNNN-NNNN. U.S. ZIP codes. ZIP codes 006XX for NW PR, 007XX for SE PR, in which XX designates the town or post office and 009XX for the San Juan Metropolitan Area, in which XX designates the area or borough of San Juan. The last four digits identify an area within the post office.
If the address is valid, it is assigned a ZIP+4 code something like this: 12344-5678, where the first five digits are the ZIP code and the trailing four digits are the delivery range. An address with a ZIP+4 code (or nine-digit ZIP code) is considered to be valid. In most cases, this means that the address is deliverable.
Each ZIP code is divided into ZIP+4 codes, just as in the rest of the United States. For example, in the ZIP+4 code 00716-2604, the basic ZIP code 00716 is the east section of the city of Ponce; and within 00716, the suffix 2604 is a section of Aceitillo Street in the Los Caobos neighborhood zip code.
Postal code. A postal code (also known locally in various English-speaking countries throughout the world as a postcode, post code, PIN or ZIP Code) is a series of letters or digits or both, sometimes including spaces or punctuation, included in a postal address for the purpose of sorting mail. As of August 2021, the Universal Postal Union ...
The Coding Accuracy Support System (CASS) enables the United States Postal Service (USPS) to evaluate the accuracy of software that corrects and matches street addresses.CASS certification is offered to all mailers, service bureaus, and software vendors that would like the USPS to evaluate the quality of their address-matching software and improve the accuracy of their ZIP+4, carrier route ...