Home Postcodes by state SA 5723 Postcode 5723 5723 is the postcode for Coober Pedy, SA. Localities with postcode 5723Coober PedySA Postcode 5723 State or territory South Australia (SA) Localities 1 Council area Coober Pedy Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5722 · Postcode 5724