Home Postcode finder SA Wharminda Wharminda postcode SA Wharminda is a locality in South Australia covered by postcode 5603. Postcode 5603 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Wharminda business listing Be the first listing in Wharminda Common questionsWhat is the postcode for Wharminda?Wharminda, SA has the postcode 5603.What state is Wharminda in?Wharminda is in South Australia (SA).Does postcode 5603 cover more than one suburb?Yes. Postcode 5603 covers 4 localities, so the postcode alone does not identify Wharminda. Browse other postcodes in South Australia, or widen the search to every Australian postcode.