Postcode 5291 is an area within South Australia. There are 36 localities known to share postcode 5291. These are: Allendale East, Blackfellows Caves, Burrungule, Canunda, Cape Douglas, Caroline, Carpenter Rocks, Caveton, Compton, Dismal Swamp, Donovans, Eight Mile Creek, German Creek, Glenburnie, Glencoe, Glencoe West, Kongorong, Mil-Lel, Mingbool, Moorak, Mount Gambier, Mount Gambier East, Mount Gambier West, Mount Schank, Nene Valley, O B Flat, Ob Flat, Pelican Point, Port Macdonnell, Racecourse Bay, Square Mile, Suttontown, Wandilo, Worrolong, Wye and Yahl.