The Electoral Districts Act 1872 (No 27 of 1872) was an act of the Government of South Australia. It increased the size of the House of Assembly to 46 members and defined the boundaries of the districts which elected them. It repealed sections 3 and 4 of the Electoral Act 1861. The Legislative Council continued to be elected by a single electoral district over the entire province of South Australia. It was to take effect only from the next time the House of Assembly was dissolved or expired.

The Assembly members were to be elected from 22 electoral districts and the First Schedule to the Act specified how many members from each district, as well as defining the boundaries of each district. The Second Schedule specified the polling places to be used for each district, but the list could be changed later.

Electoral districts Place spelling is displayed as it appeared in the schedule to the Act. NumberNameNumber of membersPlace of nomination and chief voting placeOther voting placesNotes 1 East Adelaide 2Adelaide Town Hall 2 West Adelaide 2Post Office Buildings, Adelaide 3 North Adelaide 1 North Adelaide 4 Wallaroo 3 Wallaroo Kadina, Moonta, Edithburgh, Green's Plain, Kulpara5 Port Adelaide 2 Town Hall, Port Adelaide Woodville, Virginia, Grand Junction6 West Torrens 2 Hindmarsh Hilton, Islington, Gilles Plains, Dry Creek7 Yatala 2SalisburyVirginia, Smithfield, Two Wells, near Wasleys, Mallala, Buchfelde8 Gumeracha 2Gumeracha Mount Pleasant, South Petherton, Springton, Maidstone, Tea Tree Gully, Mount Torrens, Blumberg, Palmer9 East Torrens 2Norwood Town HallGlynde, Walkerville, Glen Osmond, Magill10 Sturt 2 Unley Mitcham, South Road, Glenelg, Brighton 11 Noarlunga 2 Noarlunga Clarendon, Coromandel Valley, Happy Valley, Morphett Vale, Meadows, Willunga, Aldinga, Ashbourne 12 Mount Barker 2 Strathalbyn Echunga, Mount Barker, Macclesfield, Woodchester, Milang, Langhorne's Creek, Wellington West, Hahndorf13 Onkaparinga 2 Woodside Norton Summit, Stirling East, Nairne, Callington, Harrowgate, Hahndorf, Lobethal, Kanmantoo, Mount Lofty 14 Encounter Bay 2 Port Elliot Goolwa, Myponga, Yankalilla, Rapid Bay, Cape Jervis, Inman Valley, Hog Bay, Port Victor 15 Barossa 2 Tanunda Gawler, Lyndoch Valley, Angaston, Truro, Williamstown, Blanchetown, Keyneton 16 Light 3 Kapunda Greenock, Bagot Well, Marrabel, Hansborough, Linwood, Freeling, Ashwell, Shea-Oak Log 17 Victoria 2 Gambierton Port MacDonnell, Tarpeena, Millicent, Penola 18 Albert 2 Naracoorte Robe, Kingston, Meningie, East Wellington, Border Town 19 Burra 2 Kooringa or Redruth Saddleworth, Steelton, Hundred of Hallett, Gottlieb's Well, Jamestown 20 Stanley 2 Clare Rochester, Redhill, George Town, Port Pirie, Lochiel, Mintaro 21 Wooroora 2 Riverton Humphrey's Springs, Stockport, Port Wakefield, Balaklava, Auburn, Rhynie, Watervale, Tarlee, Hoyleton 22 Flinders 3 Port Augusta Port Lincoln, Melrose, Streaky Bay, Blinman, Kanyaka, Prince Alfred Mine, Winninnie

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