Home Postcode finder QLD Martynvale Martynvale postcode QLD Martynvale is a locality in Queensland covered by postcode 4870. Postcode 4870 State or territory Queensland (QLD) Region North QLD Add a free Martynvale business listing Be the first listing in Martynvale Common questionsWhat is the postcode for Martynvale?Martynvale, QLD has the postcode 4870.What state is Martynvale in?Martynvale is in Queensland (QLD).Does postcode 4870 cover more than one suburb?Yes. Postcode 4870 covers 26 localities, so the postcode alone does not identify Martynvale. Browse other postcodes in Queensland, or widen the search to every Australian postcode.