Home Postcode finder SA Piednippie Piednippie postcode SA Piednippie is a locality in South Australia covered by postcode 5680. Postcode 5680 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Piednippie business listing Be the first listing in Piednippie Common questionsWhat is the postcode for Piednippie?Piednippie, SA has the postcode 5680.What state is Piednippie in?Piednippie is in South Australia (SA).Does postcode 5680 cover more than one suburb?Yes. Postcode 5680 covers 20 localities, so the postcode alone does not identify Piednippie. Browse other postcodes in South Australia, or widen the search to every Australian postcode.