Home Postcode finder SA Yarrah Yarrah postcode SA Yarrah is a locality in South Australia covered by postcode 5433. Postcode 5433 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Yarrah business listing Be the first listing in Yarrah Common questionsWhat is the postcode for Yarrah?Yarrah, SA has the postcode 5433.What state is Yarrah in?Yarrah is in South Australia (SA).Does postcode 5433 cover more than one suburb?Yes. Postcode 5433 covers 6 localities, so the postcode alone does not identify Yarrah. Browse other postcodes in South Australia, or widen the search to every Australian postcode.