Home Postcodes by state SA 5043 Postcode 5043 5043 is the postcode for 5 localities in SA: Ascot Park, Marion, Mitchell Park, Morphettville and Park Holme. Localities with postcode 5043Ascot ParkSAMarionSAMitchell ParkSAMorphettvilleSAPark HolmeSA Postcode 5043 State or territory South Australia (SA) Localities 5 Council area Marion Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5042 · Postcode 5044