ZIP code
ZIP code
ZIP code (pronounced /ˈzɪp ˈkoʊd/) is a system of postal codes used by the United States Postal Service (USPS) since 1963. The term ZIP is an acronym for Zone Improvement Plan; it was chosen to suggest that the mail travels more efficiently and quickly (zipping along) when senders use the code in the postal address.
Etymology
The term ZIP is an acronym for Zone Improvement Plan. It was chosen to suggest that the mail travels more efficiently, and therefore more quickly (zipping along), when senders use the code in the postal address. The basic format consists of five digits. An extended ZIP+4 code was introduced in 1983 which includes the five digits of the ZIP code, followed by a hyphen and four additional digits that determine a more specific location within a given ZIP code.
Related Terms
- Postal Code: A series of letters or digits or both, sometimes including spaces or punctuation, included in a postal address for the purpose of sorting mail.
- USPS: The United States Postal Service, an independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States.
- Zone Improvement Plan: The full form of ZIP in ZIP code, a system of postal codes used by the United States Postal Service (USPS) since 1963.
See Also
External links
- Medical encyclopedia article on ZIP code
- Wikipedia's article - ZIP code
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