function woo_dont_ship_zipcodes( $available_methods ) {
global $woocommerce;
$excluded_zips = array( '80070','80071','80072','80073','80074','80075','80076','80077','80079' ); // define postcodes to exclude here
if( in_array( $woocommerce->customer->get_shipping_postcode(), $excluded_zips ) ) {
// Empty the $available_methods array
$available_methods = array();
}
return $available_methods;
}
add_filter( 'woocommerce_package_rates', 'woo_dont_ship_zipcodes', 10 );