Home Postcode finder SA Poltalloch Poltalloch postcode SA Poltalloch is a locality in South Australia covered by postcode 5259. Postcode 5259 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Poltalloch business listing Be the first listing in Poltalloch Common questionsWhat is the postcode for Poltalloch?Poltalloch, SA has the postcode 5259.What state is Poltalloch in?Poltalloch is in South Australia (SA).Does postcode 5259 cover more than one suburb?Yes. Postcode 5259 covers 12 localities, so the postcode alone does not identify Poltalloch. Browse other postcodes in South Australia, or widen the search to every Australian postcode.