Definition of zip code
1 : a number that identifies a particular postal delivery area in the U.S.
2 : the geographic area identified by a zip code
Origin and Etymology of zip code
zone improvement plan
First Known Use: 1963
ZIP CODE Defined for English Language Learners
Definition of zip code for English Language Learners
: a group of numbers that is used in the U.S. as part of an address to identify a mail delivery area (such as a town or a part of a city)
ZIP CODE Defined for Kids
Definition of zip code for Students
: a number that identifies each postal delivery area in the United States
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