Home Postcodes by state SA 5680 Postcode 5680 5680 is the postcode for 20 localities in SA: Carawa, Chandada, Chinbingina, Eba Anchorage, Haslam, Inkster and 14 more. Localities with postcode 5680CarawaSAChandadaSAChinbinginaSAEba AnchorageSAHaslamSAInksterSALaura BaySAMaryvaleSAMudamucklaSANunjikompitaSAPerlubieSAPetinaSAPiednippieSAPuntabieSAPurebaSASceale BaySASmoky BaySAStreaky BaySAWestallSAYanerbieSA Postcode 5680 State or territory South Australia (SA) Localities 20 Council area Ceduna; Streaky Bay; Mainly Unincorporated SA, partly Ceduna Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5671 · Postcode 5690