Home Postcode finder QLD Merryvale Merryvale postcode QLD Merryvale is a locality in Queensland covered by postcode 4340. Postcode 4340 State or territory Queensland (QLD) Region Western Suburbs Add a free Merryvale business listing Be the first listing in Merryvale Common questionsWhat is the postcode for Merryvale?Merryvale, QLD has the postcode 4340.What state is Merryvale in?Merryvale is in Queensland (QLD).Does postcode 4340 cover more than one suburb?Yes. Postcode 4340 covers 18 localities, so the postcode alone does not identify Merryvale. Browse other postcodes in Queensland, or widen the search to every Australian postcode.