darling-downs postcode wa Home ›› Postcode Finder ›› WA ›› Darling-Downs Darling Downs local listingsThe suburb of Darling Downs is located in WA and has a postcode of 6122. Free darling downs business listing! Get the first free listing in darling downs! Search and find other Postcodes in Western Australia or widen the search to Postcodes in Australia.