Home Postcode finder SA Maryvale Maryvale postcode SA Maryvale is a locality in South Australia covered by postcode 5680. Postcode 5680 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Maryvale business listing Be the first listing in Maryvale Common questionsWhat is the postcode for Maryvale?Maryvale, SA has the postcode 5680.What state is Maryvale in?Maryvale is in South Australia (SA).Does postcode 5680 cover more than one suburb?Yes. Postcode 5680 covers 20 localities, so the postcode alone does not identify Maryvale. Browse other postcodes in South Australia, or widen the search to every Australian postcode.