Home Postcode finder QLD Malpas-Trenton Malpas-Trenton postcode QLD Malpas-Trenton is a locality in Queensland covered by postcode 4816. Postcode 4816 State or territory Queensland (QLD) Region North QLD Add a free Malpas-Trenton business listing Be the first listing in Malpas-Trenton Common questionsWhat is the postcode for Malpas-Trenton?Malpas-Trenton, QLD has the postcode 4816.What state is Malpas-Trenton in?Malpas-Trenton is in Queensland (QLD).Does postcode 4816 cover more than one suburb?Yes. Postcode 4816 covers 40 localities, so the postcode alone does not identify Malpas-Trenton. Browse other postcodes in Queensland, or widen the search to every Australian postcode.