Home Postcode finder QLD Malarga Malarga postcode QLD Malarga is a locality in Queensland covered by postcode 4620. Postcode 4620 State or territory Queensland (QLD) Region Sunshine Coast Add a free Malarga business listing Be the first listing in Malarga Common questionsWhat is the postcode for Malarga?Malarga, QLD has the postcode 4620.What state is Malarga in?Malarga is in Queensland (QLD).Does postcode 4620 cover more than one suburb?Yes. Postcode 4620 covers 10 localities, so the postcode alone does not identify Malarga. Browse other postcodes in Queensland, or widen the search to every Australian postcode.