Home Postcode finder SA Furner Furner postcode SA Furner is a locality in South Australia covered by postcode 5280. Postcode 5280 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Furner business listing Be the first listing in Furner Common questionsWhat is the postcode for Furner?Furner, SA has the postcode 5280.What state is Furner in?Furner is in South Australia (SA).Does postcode 5280 cover more than one suburb?Yes. Postcode 5280 covers 16 localities, so the postcode alone does not identify Furner. Browse other postcodes in South Australia, or widen the search to every Australian postcode.