gravity_forms_australian_formatted_address.php

function g8_aus_address( $address_types, $form_id ){
	$address_types["australia"] = array(
	"label" => "Australian",
	"country" => "Australia",
	"zip_label" => "Postcode",
	"state_label" => "State",
	"states" => array(
			"NT"  => "NT",
			"ACT" => "ACT",
			"NSW" => "NSW",
			"QLD" => "QLD",
			"VIC" => "VIC",
			"WA"  => "WA",
			"SA"  => "SA",
			"TAS" => "TAS",
		)
	);
	return $address_types;
}
add_filter( 'gform_address_types', 'g8_aus_address', 10, 2 );