Home Postcode finder QLD Duingal Duingal postcode QLD Duingal is a locality in Queensland covered by postcode 4671. Postcode 4671 State or territory Queensland (QLD) Region Sunshine Coast Add a free Duingal business listing Be the first listing in Duingal Common questionsWhat is the postcode for Duingal?Duingal, QLD has the postcode 4671.What state is Duingal in?Duingal is in Queensland (QLD).Does postcode 4671 cover more than one suburb?Yes. Postcode 4671 covers 35 localities, so the postcode alone does not identify Duingal. Browse other postcodes in Queensland, or widen the search to every Australian postcode.