Home Postcode finder QLD Tuan Tuan postcode QLD Tuan is a locality in Queensland covered by postcode 4650. Postcode 4650 State or territory Queensland (QLD) Region Sunshine Coast Add a free Tuan business listing Be the first listing in Tuan Common questionsWhat is the postcode for Tuan?Tuan, QLD has the postcode 4650.What state is Tuan in?Tuan 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 Tuan. Browse other postcodes in Queensland, or widen the search to every Australian postcode.