Home Postcode finder QLD Japoonvale Japoonvale postcode QLD Japoonvale is a locality in Queensland covered by postcode 4856. Postcode 4856 State or territory Queensland (QLD) Region North QLD Add a free Japoonvale business listing Be the first listing in Japoonvale Common questionsWhat is the postcode for Japoonvale?Japoonvale, QLD has the postcode 4856.What state is Japoonvale in?Japoonvale is in Queensland (QLD).Does postcode 4856 cover more than one suburb?Yes. Postcode 4856 covers 7 localities, so the postcode alone does not identify Japoonvale. Browse other postcodes in Queensland, or widen the search to every Australian postcode.