<P> ZIP Codes are a system of postal codes used by the United States Postal Service since 1963 . The term ZIP , an acronym for Zone Improvement Plan , 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 , introduced in 1983 , includes the five digits of the ZIP Code , a hyphen , and four additional digits that determine a more specific location within a given ZIP Code . </P>
<P> ZIP Codes are a system of postal codes used by the United States Postal Service since 1963 . The term ZIP , an acronym for Zone Improvement Plan , 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 , introduced in 1983 , includes the five digits of the ZIP Code , a hyphen , and four additional digits that determine a more specific location within a given ZIP Code . </P>
what does the zip in zip code stand for
what does the zip in zip code stand for
Zone Improvement Plan
Zone Improvement Plan