dirk-hartog-island postcode wa Home ›› Postcode Finder ›› WA ›› Dirk-Hartog-Island Dirk Hartog Island local listingsThe suburb of Dirk Hartog Island is located in WA and has a postcode of 6537. Free dirk hartog island business listing! Get the first free listing in dirk hartog island! Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.