Home Postcode finder SA Kaldoonera Kaldoonera postcode SA Kaldoonera is a locality in South Australia covered by postcode 5655. Postcode 5655 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Kaldoonera business listing Be the first listing in Kaldoonera Common questionsWhat is the postcode for Kaldoonera?Kaldoonera, SA has the postcode 5655.What state is Kaldoonera in?Kaldoonera is in South Australia (SA).Does postcode 5655 cover more than one suburb?Yes. Postcode 5655 covers 4 localities, so the postcode alone does not identify Kaldoonera. Browse other postcodes in South Australia, or widen the search to every Australian postcode.