Home Postcode finder QLD Lockhart Lockhart postcode QLD Lockhart is a locality in Queensland covered by postcode 4871. Postcode 4871 State or territory Queensland (QLD) Region North QLD Add a free Lockhart business listing Be the first listing in Lockhart Common questionsWhat is the postcode for Lockhart?Lockhart, QLD has the postcode 4871.What state is Lockhart in?Lockhart 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 Lockhart. Browse other postcodes in Queensland, or widen the search to every Australian postcode.