Home Postcode finder SA Koolywurtie Koolywurtie postcode SA Koolywurtie is a locality in South Australia covered by postcode 5575. Postcode 5575 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Koolywurtie business listing Be the first listing in Koolywurtie Common questionsWhat is the postcode for Koolywurtie?Koolywurtie, SA has the postcode 5575.What state is Koolywurtie in?Koolywurtie is in South Australia (SA).Does postcode 5575 cover more than one suburb?Yes. Postcode 5575 covers 17 localities, so the postcode alone does not identify Koolywurtie. Browse other postcodes in South Australia, or widen the search to every Australian postcode.