Home Postcode finder SA Mercunda Mercunda postcode SA Mercunda is a locality in South Australia covered by postcode 5308. Postcode 5308 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Mercunda business listing Be the first listing in Mercunda Common questionsWhat is the postcode for Mercunda?Mercunda, SA has the postcode 5308.What state is Mercunda in?Mercunda is in South Australia (SA).Does postcode 5308 cover more than one suburb?Yes. Postcode 5308 covers 6 localities, so the postcode alone does not identify Mercunda. Browse other postcodes in South Australia, or widen the search to every Australian postcode.