**Add this snippet to the functions.php file of your theme to add a new country to the WooCommerce countries list.**

add_filter('woocommerce_states', 'sa_woocommerce_states');
add_filter('woocommerce_countries_allowed_country_states','sa_woocommerce_state');

function SA_woocommerce_states( $states ) {

    $states['ZA']['EC'] = __('Eastern Cape', 'woocommerce');
    return $states;
}