Home Postcode finder QLD Duckinwilla Duckinwilla postcode QLD Duckinwilla is a locality in Queensland covered by postcode 4650. Postcode 4650 State or territory Queensland (QLD) Region Sunshine Coast Add a free Duckinwilla business listing Be the first listing in Duckinwilla Common questionsWhat is the postcode for Duckinwilla?Duckinwilla, QLD has the postcode 4650.What state is Duckinwilla in?Duckinwilla is in Queensland (QLD).Does postcode 4650 cover more than one suburb?Yes. Postcode 4650 covers 48 localities, so the postcode alone does not identify Duckinwilla. Browse other postcodes in Queensland, or widen the search to every Australian postcode.