Home Postcode finder SA Wirrina Cove Wirrina Cove postcode SA Wirrina Cove is a locality in South Australia covered by postcode 5204. Postcode 5204 State or territory South Australia (SA) Region Adelaide Add a free Wirrina Cove business listing Be the first listing in Wirrina Cove Common questionsWhat is the postcode for Wirrina Cove?Wirrina Cove, SA has the postcode 5204.What state is Wirrina Cove in?Wirrina Cove is in South Australia (SA).Does postcode 5204 cover more than one suburb?Yes. Postcode 5204 covers 10 localities, so the postcode alone does not identify Wirrina Cove. Browse other postcodes in South Australia, or widen the search to every Australian postcode.