Home Postcode finder SA Holder Holder postcode SA Holder is a locality in South Australia covered by postcode 5330. Postcode 5330 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Holder business listing Be the first listing in Holder Common questionsWhat is the postcode for Holder?Holder, SA has the postcode 5330.What state is Holder in?Holder is in South Australia (SA).Does postcode 5330 cover more than one suburb?Yes. Postcode 5330 covers 15 localities, so the postcode alone does not identify Holder. Browse other postcodes in South Australia, or widen the search to every Australian postcode.