Home Postcode finder SA Marla Marla postcode SA Marla is a locality in South Australia covered by postcode 5724. Postcode 5724 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Marla business listing Be the first listing in Marla Common questionsWhat is the postcode for Marla?Marla, SA has the postcode 5724.What state is Marla in?Marla is in South Australia (SA).Does postcode 5724 cover more than one suburb?Yes. Postcode 5724 covers 2 localities, so the postcode alone does not identify Marla. Browse other postcodes in South Australia, or widen the search to every Australian postcode.