ValidatesZipcode Build Status Code Climate Gem Version security

Adds zipcode / postal code validation support to Rails (ActiveModel), considering postal code formats for mostly every country.

ValidatesZipcode currently support 233 country codes. Regex data taken from several sources, being the main source the CLDR database (release 27, around 159). Any other country's postal code will validate without errors.

ValidatesZipcode supports Rails >= 4.2 and Ruby >= 2.0. It could probably work unsupported in Rails 3.2 and Ruby 1.9.3 as well. Truffleruby is also tested, but no reports of working in production apps for now.


Add this line to your application's Gemfile:

gem 'validates_zipcode'

And then execute:

$ bundle

Or install it yourself as:

$ gem install validates_zipcode


validates_zipcode :zipcode

validates :zipcode, zipcode: true

ValidatesZipcode expects the model to have an attribute called country_alpha2 to contain the country code. You can provide your own country_code using :country_code option, or specify which attribute contains this information using :country_code_attribute option.

validates :zipcode, zipcode: { country_code: :es }

validates :zipcode, zipcode: { country_code_attribute: :my_country_code_column }

If you need to localize the error message, just add this to your I18n locale file:

    invalid_zipcode: Your zipcode error message.


  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request

Also, you should read and follow our Code of Conduct.


To see the generous people who have contributed code, take a look at the contributors list.



Copyright (c) 2014 David Gil PĂ©rez, released under the MIT license