Home Postcode finder SA Cradock Cradock postcode SA Cradock is a locality in South Australia covered by postcode 5432. Postcode 5432 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Cradock business listing Be the first listing in Cradock Common questionsWhat is the postcode for Cradock?Cradock, SA has the postcode 5432.What state is Cradock in?Cradock is in South Australia (SA).Does postcode 5432 cover more than one suburb?Yes. Postcode 5432 covers 5 localities, so the postcode alone does not identify Cradock. Browse other postcodes in South Australia, or widen the search to every Australian postcode.