Home Postcode finder QLD Doongul Doongul postcode QLD Doongul is a locality in Queensland covered by postcode 4620. Postcode 4620 State or territory Queensland (QLD) Region Sunshine Coast Add a free Doongul business listing Be the first listing in Doongul Common questionsWhat is the postcode for Doongul?Doongul, QLD has the postcode 4620.What state is Doongul in?Doongul is in Queensland (QLD).Does postcode 4620 cover more than one suburb?Yes. Postcode 4620 covers 10 localities, so the postcode alone does not identify Doongul. Browse other postcodes in Queensland, or widen the search to every Australian postcode.