WooCommerce move reorder fields checkout page

wc-reorder-fields-checkout-page.php

<?php

add_filter( 'woocommerce_default_address_fields', 'wc_reorder_fields_checkout_page' );

function wc_reorder_fields_checkout_page( $fields ) {
// default priorities:
// 'first_name' – 10
// 'last_name' – 20
// 'company' – 30
// 'country' – 40
// 'address_1' – 50
// 'address_2' – 60
// 'city' – 70
// 'state' – 80
// 'postcode' – 90
// e.g. move 'company' above 'first_name':
// just assign priority less than 10
$fields['state']['priority'] = 70;

return $fields;
}