Greenweb

Only use this plugin if you already have Ozh’s Admin Drop Down Menu installed.
Ozh’s Admin Drop Down Menu is a great ui option 
But it should be an option that does not effect every author, editor and admin on a website
If you like this plug-in please give it a five star rating, blog about it, Tweet about it and tell your WordPress friends.

Hide Option for Ozh's Admin Drop Down Menu

Gives your users the ability to turn off Ozh's Admin Drop Down Menu in their profile

Richer Yang

This plubin is based on <a href="https://tw.wordpress.org/plugins/wc-city-select/" rel="nofollow ugc">WC City Select</a>
WooCommerce uses a text input for the customers to enter the city or town. 
With this plugin you can provide a list of cities to be shown as a select dropdown.
This will be shown in checkout pages, edit addresses pages and shipping calculator if it’s configured that way.
After selected the city or town, auto set the postcode number if is defined.
<h3>How to add cities</h3>
A list of cities can be added in your theme functions.php file.
Use <code>ry_wc_city_select_cities</code> filter to load your cities. 
This is done similarly to <a href="https://docs.woocommerce.com/document/addmodify-states/" rel="nofollow ugc">Add/Modify States</a>. 
It should be added on your functions.php or a custom plugin.
<pre><code>add_filter( 'ry_wc_city_select_cities', 'my_cities' );
/**
 * Replace XX with the country code. Instead of YYY, ZZZ use actual state codes.
 * The City list can list of city name with postcode or just city name.
 */
function my_cities( $cities ) {
 $cities['XX'] = array(
 'YYY' => array( // city name with postcoe
 ['City', '100'],
 ['Another City', '101']
 ),
 'ZZZ' => array( // just city name
 'City 3',
 'City 4'
 )
 );
 return $cities;
}
</code></pre>

RY City Select for WooCommerce

Show a dropdown select as the cities input on WooCommerce. Auto set the postcode for selected city.

Hide Option for Ozh's Admin Drop Down Menu vs RY City Select for WooCommerce