Home Postcode finder QLD Barron Gorge Barron Gorge postcode QLD Barron Gorge is a locality in Queensland covered by postcode 4870. Postcode 4870 State or territory Queensland (QLD) Region North QLD Add a free Barron Gorge business listing Be the first listing in Barron Gorge Common questionsWhat is the postcode for Barron Gorge?Barron Gorge, QLD has the postcode 4870.What state is Barron Gorge in?Barron Gorge is in Queensland (QLD).Does postcode 4870 cover more than one suburb?Yes. Postcode 4870 covers 26 localities, so the postcode alone does not identify Barron Gorge. Browse other postcodes in Queensland, or widen the search to every Australian postcode.