Cacher is the code snippet organizer for pro developers

<?php 

// Example: change default state to ALBERTA
 
add_filter( 'default_checkout_state', 'change_default_checkout_state' );
  
function change_default_checkout_state() {
  return 'AB'; // state code
}
 
// CANADA as Default country at checkout
 
add_filter( 'default_checkout_country', 'change_default_checkout_country' );
 
function change_default_checkout_country() {
  return 'CA'; 
}