Home Postcode finder SA Bumbunga Bumbunga postcode SA Bumbunga is a locality in South Australia covered by postcode 5520. Postcode 5520 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Bumbunga business listing Be the first listing in Bumbunga Common questionsWhat is the postcode for Bumbunga?Bumbunga, SA has the postcode 5520.What state is Bumbunga in?Bumbunga is in South Australia (SA).Does postcode 5520 cover more than one suburb?Yes. Postcode 5520 covers 6 localities, so the postcode alone does not identify Bumbunga. Browse other postcodes in South Australia, or widen the search to every Australian postcode.