Home Postcode finder QLD Thornborough Thornborough postcode QLD Thornborough is a locality in Queensland covered by postcode 4871. Postcode 4871 State or territory Queensland (QLD) Region North QLD Add a free Thornborough business listing Be the first listing in Thornborough Common questionsWhat is the postcode for Thornborough?Thornborough, QLD has the postcode 4871.What state is Thornborough in?Thornborough is in Queensland (QLD).Does postcode 4871 cover more than one suburb?Yes. Postcode 4871 covers 103 localities, so the postcode alone does not identify Thornborough. Browse other postcodes in Queensland, or widen the search to every Australian postcode.