I am wondering how to go about implementing Location Automation Field, as suggested in this article: http://uxmovement.com/forms/new-form-techniques-proven-to-save-time-and-money/
Are there libraries or services that can help me figure out City/State given the zipcode? I know Google has the Geocoder/decoder or Google Places search that could potentially be useful but their Terms of Use mandate that you must use their services in conjunction with displaying the results on their map, which is a weird thing to do when the user is filling out billing info...