A plugin for french Code Postal, INSEE code and town name. Use a multi short text for the town and have the Insee code in your data.
Update of public part, new question type, new question settings or new way to use and show answers.
cpVille : add Postal code and Insee management in your data arrayTextAdapt : use array of dropdown in your surveys
A plugin to use Array text question withy your need : show dropdown, allow only numeric or integer value.