Home Postcode finder SA Whyte Yarcowie Whyte Yarcowie postcode SA Whyte Yarcowie is a locality in South Australia covered by postcode 5420. Postcode 5420 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Whyte Yarcowie business listing Be the first listing in Whyte Yarcowie Common questionsWhat is the postcode for Whyte Yarcowie?Whyte Yarcowie, SA has the postcode 5420.What state is Whyte Yarcowie in?Whyte Yarcowie is in South Australia (SA).Does postcode 5420 cover more than one suburb?Yes. Postcode 5420 covers 2 localities, so the postcode alone does not identify Whyte Yarcowie. Browse other postcodes in South Australia, or widen the search to every Australian postcode.