Identify city and state for given zip code
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ZipCodes Gem Version

Simple gem to get city, state, and time zone for a given zip code. It has a yaml database bundled with it, so you need several mb of memory for the whole hash.


Add this line to your application's Gemfile:

gem 'zip-codes'

And then execute:

$ bundle

Or install it yourself as:

$ gem install zip-codes


# => {:state_code=>"GA", :state_name=>"Georgia", :city=>"Atlanta", :time_zone=>"America/New_York"}
# First run will take a while, as the yaml has to be loaded

If you are using Rails, you can load the hash on app startup for production and staging.

# config/initializers/load_zip_codes.rb
ZipCodes.load unless Rails.env.development?


  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 new Pull Request