Home Postcode finder SA Barndioota Barndioota postcode SA Barndioota is a locality in South Australia covered by postcode 5434. Postcode 5434 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Barndioota business listing Be the first listing in Barndioota Common questionsWhat is the postcode for Barndioota?Barndioota, SA has the postcode 5434.What state is Barndioota in?Barndioota is in South Australia (SA).Does postcode 5434 cover more than one suburb?Yes. Postcode 5434 covers 3 localities, so the postcode alone does not identify Barndioota. Browse other postcodes in South Australia, or widen the search to every Australian postcode.