Home Postcode finder SA Cowirra Cowirra postcode SA Cowirra is a locality in South Australia covered by postcode 5238. Postcode 5238 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Cowirra business listing Be the first listing in Cowirra Common questionsWhat is the postcode for Cowirra?Cowirra, SA has the postcode 5238.What state is Cowirra in?Cowirra is in South Australia (SA).Does postcode 5238 cover more than one suburb?Yes. Postcode 5238 covers 31 localities, so the postcode alone does not identify Cowirra. Browse other postcodes in South Australia, or widen the search to every Australian postcode.