Home Postcodes by state SA 5350 Postcode 5350 5350 is the postcode for 2 localities in SA: Rosedale and Sandy Creek. Localities with postcode 5350RosedaleSASandy CreekSA Postcode 5350 State or territory South Australia (SA) Localities 2 Council area Mainly Barossa, partly Light; Barossa Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5346 · Postcode 5351