Home Postcode finder SA Emu Flat Emu Flat postcode SA Emu Flat 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 Emu Flat business listing Be the first listing in Emu Flat Common questionsWhat is the postcode for Emu Flat?Emu Flat, SA has the postcode 5453.What state is Emu Flat in?Emu Flat 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 Emu Flat. Browse other postcodes in South Australia, or widen the search to every Australian postcode.