Home Postcode finder SA Baird Bay Baird Bay postcode SA Baird Bay is a locality in South Australia covered by postcode 5671. Postcode 5671 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Baird Bay business listing Be the first listing in Baird Bay Common questionsWhat is the postcode for Baird Bay?Baird Bay, SA has the postcode 5671.What state is Baird Bay in?Baird Bay is in South Australia (SA).Does postcode 5671 cover more than one suburb?Yes. Postcode 5671 covers 8 localities, so the postcode alone does not identify Baird Bay. Browse other postcodes in South Australia, or widen the search to every Australian postcode.