Home Postcodes by state SA 5033 Postcode 5033 5033 is the postcode for 6 localities in SA: Cowandilla, Hilton, Marleston, Richmond, West Richmond and Hilton Plaza. Localities with postcode 5033CowandillaSAHiltonSAHilton PlazaSAMarlestonSARichmondSAWest RichmondSA Postcode 5033 State or territory South Australia (SA) Localities 6 Council area West Torrens Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 5032 · Postcode 5034