Home Postcodes by state SA 5356 Postcode 5356 5356 is the postcode for 7 localities in SA: Annadale, Dutton, Dutton East, Sandleton, St Kitts, Steinfeld and 1 more. Localities with postcode 5356AnnadaleSADuttonSADutton EastSASandletonSASt KittsSASteinfeldSATruroSA Postcode 5356 State or territory South Australia (SA) Localities 7 Council area Mid Murray; Mainly Mid Murray, partly Goyder; Light Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5355 · Postcode 5357