Home Postcode finder SA Emu Bay Emu Bay postcode SA Emu Bay is a locality in South Australia covered by postcode 5223. Postcode 5223 State or territory South Australia (SA) Region Sa Subs Near 2 Add a free Emu Bay business listing Be the first listing in Emu Bay Common questionsWhat is the postcode for Emu Bay?Emu Bay, SA has the postcode 5223.What state is Emu Bay in?Emu Bay is in South Australia (SA).Does postcode 5223 cover more than one suburb?Yes. Postcode 5223 covers 30 localities, so the postcode alone does not identify Emu Bay. Browse other postcodes in South Australia, or widen the search to every Australian postcode.