Home Postcode finder SA Smoky Bay Smoky Bay postcode SA Smoky Bay is a locality in South Australia covered by postcode 5680. Postcode 5680 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Smoky Bay business listing More business listings in Smoky Bay Businesses in Smoky BayKiwis OystersSmoky Bay Road · 0488103419Kiwis OystersSmoky Bay Rd · 0488103419Kiwis OystersSmoky Bay Rd · 0488103419 Common questionsWhat is the postcode for Smoky Bay?Smoky Bay, SA has the postcode 5680.What state is Smoky Bay in?Smoky Bay is in South Australia (SA).Does postcode 5680 cover more than one suburb?Yes. Postcode 5680 covers 20 localities, so the postcode alone does not identify Smoky Bay. Browse other postcodes in South Australia, or widen the search to every Australian postcode.