Home Postcode finder SA Woolshed Flat Woolshed Flat postcode SA Woolshed Flat is a locality in South Australia covered by postcode 5412. Postcode 5412 State or territory South Australia (SA) Region Sa Subs Near 1 Add a free Woolshed Flat business listing Be the first listing in Woolshed Flat Common questionsWhat is the postcode for Woolshed Flat?Woolshed Flat, SA has the postcode 5412.What state is Woolshed Flat in?Woolshed Flat is in South Australia (SA).Does postcode 5412 cover more than one suburb?Yes. Postcode 5412 covers 4 localities, so the postcode alone does not identify Woolshed Flat. Browse other postcodes in South Australia, or widen the search to every Australian postcode.