castaways-beach postcode qld Home ›› Postcode Finder ›› QLD ›› Castaways-Beach Castaways Beach local listingsThe suburb of Castaways Beach is located in QLD and has a postcode of 4567. Free castaways beach business listing! Get the first free listing in castaways beach! Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.