# Validates\_format\_of :zipcode

**URL:** <https://www.ruby-forum.com/t/validates-format-of-zipcode/55195>\
**Category:** Ruby\
**Created:** [March 17, 2006, 7:51pm UTC](https://www.ruby-forum.com/t/validates-format-of-zipcode/55195 "2006-03-17T19:51:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![misiek](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/76d3ee/32.png) [@misiek](https://www.ruby-forum.com/u/misiek)\
**Post date:** [March 17, 2006, 7:51pm UTC](https://www.ruby-forum.com/t/validates-format-of-zipcode/55195/1 "2006-03-17T19:51:35Z")

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how can I set the validation of the zipcode ?

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<div class="post-metadata">

**Author:** ![misiek](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/76d3ee/32.png) [@misiek](https://www.ruby-forum.com/u/misiek)\
**Post date:** [March 17, 2006, 9:04pm UTC](https://www.ruby-forum.com/t/validates-format-of-zipcode/55195/2 "2006-03-17T21:04:36Z")

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you’ll want to try a regexp. look here for the code

> **[Regular Expression Library](https://regexlib.com/DisplayPatterns.aspx?cattabindex=6&categoryId=7&AspxAutoDetectCookieSupport=1)**
>
> Regular Expression Library provides a searchable database of regular expressions. Users can add, edit, rate, and test regular expressions.

it’s in there somewhere…  
hope this helps