Home Postcode finder SA Mount Damper Mount Damper postcode SA Mount Damper is a locality in South Australia covered by postcode 5654. Postcode 5654 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Mount Damper business listing Be the first listing in Mount Damper Common questionsWhat is the postcode for Mount Damper?Mount Damper, SA has the postcode 5654.What state is Mount Damper in?Mount Damper is in South Australia (SA).Does postcode 5654 cover more than one suburb?Yes. Postcode 5654 covers 4 localities, so the postcode alone does not identify Mount Damper. Browse other postcodes in South Australia, or widen the search to every Australian postcode.