Home Postcode finder QLD Miallo Miallo postcode QLD Miallo is a locality in Queensland covered by postcode 4873. Postcode 4873 State or territory Queensland (QLD) Region North QLD Add a free Miallo business listing Be the first listing in Miallo Common questionsWhat is the postcode for Miallo?Miallo, QLD has the postcode 4873.What state is Miallo in?Miallo is in Queensland (QLD).Does postcode 4873 cover more than one suburb?Yes. Postcode 4873 covers 29 localities, so the postcode alone does not identify Miallo. Browse other postcodes in Queensland, or widen the search to every Australian postcode.