Home Postcode finder QLD Maadi Maadi postcode QLD Maadi is a locality in Queensland covered by postcode 4855. Postcode 4855 State or territory Queensland (QLD) Region North QLD Add a free Maadi business listing Be the first listing in Maadi Common questionsWhat is the postcode for Maadi?Maadi, QLD has the postcode 4855.What state is Maadi in?Maadi is in Queensland (QLD).Does postcode 4855 cover more than one suburb?Yes. Postcode 4855 covers 8 localities, so the postcode alone does not identify Maadi. Browse other postcodes in Queensland, or widen the search to every Australian postcode.