Inbound Horizons

Simple Dropdown Filter by Category for Woocommerce automatically adds a dropdown on your shop catalog page that allows you to instantly filter products by WooCommerce product categories. The dropdown will show up on the shop page, product archive page and product tag page. It shows a product count per each category by default. The plugin currently supports only selecting a single category to filter.
The dropdown filter buttons shows up to the right of the native WooCommerce “sort by” dropdown and uses native WooCommerce component code.
<h4>Features and Extras</h4>
You can choose to manually exclude certain categories to show up in the dropdown filter if you do not want users to filter by those categories.
You can toggle off or on showing product counts by category or showing empty categories in your shop.
You can set custom CSS classes for styling the button to match your theme, and even apply custom CSS directly to the plugin from the back end settings panel.
It will work with nested parent/child categories you create in WooCommerce and display the child categories underneath the parent in your dropdown menu when users select a category.

Simple Dropdown Filter by Category for WooCommerce

Add a dropdown on the catalog page to filter products by WooCommerce categories.

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.

Simple Dropdown Filter by Category for WooCommerce vs RY City Select for WooCommerce