walyunga-national-park postcode wa Home ›› Postcode Finder ›› WA ›› Walyunga-National-Park Walyunga National Park local listingsThe suburb of Walyunga National Park is located in WA and has a postcode of 6084. Free walyunga national park business listing! Get the first free listing in walyunga national park! Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.