Home Postcode finder QLD Sundown Sundown postcode QLD Sundown is a locality in Queensland covered by postcode 4860. Postcode 4860 State or territory Queensland (QLD) Region North QLD Add a free Sundown business listing Be the first listing in Sundown Common questionsWhat is the postcode for Sundown?Sundown, QLD has the postcode 4860.What state is Sundown in?Sundown is in Queensland (QLD).Does postcode 4860 cover more than one suburb?Yes. Postcode 4860 covers 37 localities, so the postcode alone does not identify Sundown. Browse other postcodes in Queensland, or widen the search to every Australian postcode.