Dunstan is a single-member electoral district for the South Australian House of Assembly, covering the inner eastern suburbs of Beulah Park, College Park, Evandale, Firle, Hackney, Joslin, Kensington, Kensington Park, Kensington Gardens, Kent Town, Marden, Maylands, Norwood, Payneham, Payneham South, Royston Park, St Morris, St Peters, Stepney, and Trinity Gardens.