Home Postcode finder SA Pinkawillinie Pinkawillinie postcode SA Pinkawillinie is a locality in South Australia covered by postcode 5641. Postcode 5641 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Pinkawillinie business listing Be the first listing in Pinkawillinie Common questionsWhat is the postcode for Pinkawillinie?Pinkawillinie, SA has the postcode 5641.What state is Pinkawillinie in?Pinkawillinie is in South Australia (SA).Does postcode 5641 cover more than one suburb?Yes. Postcode 5641 covers 13 localities, so the postcode alone does not identify Pinkawillinie. Browse other postcodes in South Australia, or widen the search to every Australian postcode.