Home Postcode finder QLD Trebonne Trebonne postcode QLD Trebonne is a locality in Queensland covered by postcode 4850. Postcode 4850 State or territory Queensland (QLD) Region North QLD Add a free Trebonne business listing More business listings in Trebonne Businesses in TrebonneCanossa Convent SchoolStone River Rd · 07 47771330Trebonne State SchoolStone River Rd · 07 47771215 Common questionsWhat is the postcode for Trebonne?Trebonne, QLD has the postcode 4850.What state is Trebonne in?Trebonne is in Queensland (QLD).Does postcode 4850 cover more than one suburb?Yes. Postcode 4850 covers 34 localities, so the postcode alone does not identify Trebonne. Browse other postcodes in Queensland, or widen the search to every Australian postcode.