Home Postcodes by state SA Innamincka Innamincka postcode SA Innamincka is a locality in South Australia covered by postcode 5731. Postcode 5731 State or territory South Australia (SA) Region SA Outer Suburbs Council area Unincorporated SA Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Innamincka business listing Be the first listing in Innamincka Also in postcode 5731Coopers CreekSA 5731Cordillo DownsSA 5731Durham DownsSA 5731Leigh CreekSA 5731LyndhurstSA 5731Merty MertySA 5731MoolawatanaSA 5731WitchelinaSA 5731 Common questionsWhat is the postcode for Innamincka?Innamincka, SA has the postcode 5731.What state is Innamincka in?Innamincka is in South Australia (SA).What council is Innamincka in?Innamincka is in the Unincorporated SA local government area.Does postcode 5731 cover more than one suburb?Yes. Postcode 5731 covers 9 localities, so the postcode alone does not identify Innamincka. Browse other postcodes in South Australia, or widen the search to every Australian postcode.