magento-2-city-dropdown
There are 2 repositories under magento-2-city-dropdown topic.
php-cuong/magento2-city-dropdown
Magento 2 City Dropdown
ldtsoft/magento2-dropdown-address
The address fields (city and ward) will be appear as a dropdown field. So, the customer can easily and effortlessly select a city/ward from the given list of available cities/wards based on the selected country of his/her choice