Home Postcodes by state SA 5118 Postcode 5118 5118 is the postcode for 16 localities in SA: Bibaringa, Buchfelde, Concordia, Gawler, Gawler Belt, Gawler East and 10 more. Localities with postcode 5118BibaringaSABuchfeldeSAConcordiaSAGawlerSAGawler BeltSAGawler EastSAGawler RiverSAGawler SouthSAGawler WestSAHewettSAKalbeebaSAKangaroo FlatSAKingsfordSAReidSAWard BeltSAWillastonSA Postcode 5118 State or territory South Australia (SA) Localities 16 Council area Playford; Light; Barossa; Gawler Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5117 · Postcode 5120