Home Postcode finder SA Wandana Wandana postcode SA Wandana is a locality in South Australia covered by postcode 5690. Postcode 5690 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Wandana business listing Be the first listing in Wandana Common questionsWhat is the postcode for Wandana?Wandana, SA has the postcode 5690.What state is Wandana in?Wandana is in South Australia (SA).Does postcode 5690 cover more than one suburb?Yes. Postcode 5690 covers 19 localities, so the postcode alone does not identify Wandana. Browse other postcodes in South Australia, or widen the search to every Australian postcode.