cowalellup postcode wa Home ›› Postcode Finder ›› WA ›› Cowalellup Cowalellup local listingsThe suburb of Cowalellup is located in WA and has a postcode of 6336. Free cowalellup business listing! Get the first free listing in cowalellup! Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.