Home Postcode finder WA Darling Downs Darling Downs postcode WA Darling Downs is a locality in Western Australia covered by postcode 6122. Postcode 6122 State or territory Western Australia (WA) Region North West Suburbs Add a free Darling Downs business listing More business listings in Darling Downs Businesses in Darling DownsAir-Born Amusements139 Bruns Drive · 08 9399 4640Frametec manufactures568 South Western Highway, Darling Downs WA 6122, Australia · +10892502220 Common questionsWhat is the postcode for Darling Downs?Darling Downs, WA has the postcode 6122.What state is Darling Downs in?Darling Downs is in Western Australia (WA).Does postcode 6122 cover more than one suburb?Yes. Postcode 6122 covers 4 localities, so the postcode alone does not identify Darling Downs. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.