wembley-downs postcode wa Home ›› Postcode Finder ›› WA ›› Wembley-Downs Wembley Downs local listingsThe suburb of Wembley Downs is located in WA and has a postcode of 6019. Free wembley downs business listing! Get the first free listing in wembley downs! Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.