How to set default values in Woocommerce checkout? [closed]

Try this code to change the default billing country on the checkout page.

add_filter( 'default_checkout_billing_country', 'change_default_checkout_country' );


function change_default_checkout_country() {
  return 'US'; // country code
}

To change default shipping country on the checkout page

function change_set_checkout_field_input_value_default($fields) {
$fields['shipping']['shipping_country']['default'] = 'Australia';
return $fields;
}

add_filter( 'woocommerce_checkout_fields', 'change_set_checkout_field_input_value_default' );