Home Postcode finder QLD Queenton Queenton postcode QLD Queenton is a locality in Queensland covered by postcode 4820. Postcode 4820 State or territory Queensland (QLD) Region North QLD Add a free Queenton business listing Be the first listing in Queenton Common questionsWhat is the postcode for Queenton?Queenton, QLD has the postcode 4820.What state is Queenton in?Queenton is in Queensland (QLD).Does postcode 4820 cover more than one suburb?Yes. Postcode 4820 covers 21 localities, so the postcode alone does not identify Queenton. Browse other postcodes in Queensland, or widen the search to every Australian postcode.