In some countries there is no Postcode/ZIP (such as Ireland!). How do we make the Postcode/ZIP field not required, or how do we completely remove it? The answer is very simple.
PHP Snippet: Remove Postcode/ZIP Field @ WooCommerce Checkout
/**
* @snippet Remove the Postcode Field on the WooCommerce Checkout
* @how-to Get CustomizeWoo.com FREE
* @sourcecode https://businessbloomer.com/?p=461
* @author Rodolfo Melogli
* @testedwith WooCommerce 3.5.1
*/
add_filter( 'woocommerce_checkout_fields' , 'bbloomer_remove_billing_postcode_checkout' );
function bbloomer_remove_billing_postcode_checkout( $fields ) {
unset($fields['billing']['billing_postcode']);
return $fields;
}
Official Documentation
https://docs.woothemes.com/document/tutorial-customising-checkout-fields-using-actions-and-filters/