# Boundary zip code search

**URL:** <https://www.ruby-forum.com/t/boundary-zip-code-search/108957>\
**Category:** Rails\
**Created:** [July 9, 2007, 11:44pm UTC](https://www.ruby-forum.com/t/boundary-zip-code-search/108957 "2007-07-09T23:44:41Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![mark](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e9c0ed/32.png) [@mark](https://www.ruby-forum.com/u/mark)\
**Post date:** [July 9, 2007, 11:44pm UTC](https://www.ruby-forum.com/t/boundary-zip-code-search/108957/1 "2007-07-09T23:44:41Z")

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Is there a service or library around (preferably free) that returns a  
list of boundary zip codes from a given zip code?