RESORTING Countries in Drop Down Menu

Found this tip from this site (scroll down to “Alter the default state and country at the checkout”)
https://www.pootlepress.com/2014/04/100-woocommerce-tips-tricks/

/**
* Manipulate default state and countries
*
* Code goes in your theme functions.php file, and change the XX to preferred country code
*/
add_filter( 'default_checkout_country', 'change_default_checkout_country' );
add_filter( 'default_checkout_state', 'change_default_checkout_state' );
function change_default_checkout_country() {
return 'XX'; // country code
}
function change_default_checkout_state() {
return 'XX'; // state code
}

Unfortunately I couldn’t get it to work :/ the code just kept showing up in my header for some reason. I can assure you I wasn’t posting it in the header.php file thought hahah.

AH my bad, it worked!!!

But still not in the calculate shipping area.. Any ideas there??