The name and boundaries were formally established in April 2001, with the name having been proposed by the council. There is some ambiguity about the origin of the name: the state place name gazetteer records it as being "possibly [named] after the local road"; however, there is no current road by that name in Mayfield, but there is a Mayfield Homestead.
It occupies roughly the north-eastern quarter of the cadastral Hundred of Reynolds.
The locality is entirely rural in nature, and a series of rough dirt roads are the only means of vehicle access through the area.
The historic , a remnant of the significant Old Canowie Station, is located on the boundary between Mayfield and its northern neighbour Belalie East, and is listed on the South Australian Heritage Register.
- "Search result(s) for Mayfield, 5454". Location SA Map Viewer. Government of South Australia. Retrieved 3 April 2016.
- "Search result(s) for Mayfield, 5454". Property Location Browser. Government of South Australia. Archived from the original on 12 October 2016. Retrieved 4 April 2016.
- "Mayfield SA 5454". Google Maps. Retrieved 4 April 2016.
- "Coolootoo Shepherd's Hut". South Australian Heritage Register. Department of Environment, Water and Natural Resources. Retrieved 3 April 2016.