ZIP Code Definition

zip
noun
A series of digits designating a specific locality in the United States, appended to a postal address to expedite the sorting and delivery of mail.
American Heritage
Such a code number, typically consisting of five digits, although often expanded to nine.
Webster's New World
A series of digits designating a specific locality in the United States, appended to a postal address to expedite the sorting and delivery of mail.
American Heritage
Synonyms:

Other Word Forms of ZIP Code

Noun

Singular:
ZIP code
Plural:
zip-codes

Origin of ZIP Code

  • From Zone Improvement Plan

    From Wiktionary

  • Originally a trademark

    From American Heritage Dictionary of the English Language, 5th Edition

  • Originally a trademark

    From American Heritage Dictionary of the English Language, 5th Edition

ZIP Code Is Also Mentioned In

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