[WooCommerce 3.0+] Change the default state and country on the checkout

wc-dcc-php

add_filter( 'default_checkout_billing_country', 'change_default_checkout_country' );
add_filter( 'default_checkout_billing_state', 'change_default_checkout_state' );

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

function change_default_checkout_state() {
  return 'XX'; // state code
}

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Add a condition to the function, to check if the user already exists, like so:

function change_default_checkout_country( $country ) {
    // If the user already exists, don't override country
    if ( WC()->customer->get_is_paying_customer() ) {
        return $country;
    }

    return 'country_code'; // override to default country
}

Cheers!

any update for 'SHIP TO A DIFFERENT ADDRESS?' default country set?