Home Postcode finder SA Coolillie Coolillie postcode SA Coolillie is a locality in South Australia covered by postcode 5670. Postcode 5670 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Coolillie business listing Be the first listing in Coolillie Common questionsWhat is the postcode for Coolillie?Coolillie, SA has the postcode 5670.What state is Coolillie in?Coolillie is in South Australia (SA).Does postcode 5670 cover more than one suburb?Yes. Postcode 5670 covers 11 localities, so the postcode alone does not identify Coolillie. Browse other postcodes in South Australia, or widen the search to every Australian postcode.