Home Postcode finder SA Barinia Barinia postcode SA Barinia is a locality in South Australia covered by postcode 5453. Postcode 5453 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Barinia business listing Be the first listing in Barinia Common questionsWhat is the postcode for Barinia?Barinia, SA has the postcode 5453.What state is Barinia in?Barinia is in South Australia (SA).Does postcode 5453 cover more than one suburb?Yes. Postcode 5453 covers 16 localities, so the postcode alone does not identify Barinia. Browse other postcodes in South Australia, or widen the search to every Australian postcode.