St Clair is geographically located with in the Hundred of Yatala, and was first recorded as the name for the suburb on 6 November 2012 by the Surveyor General of South Australia.

Despite community opposition, including a legal challenge by a group of local residents, the land swap proceeded in late 2009.

This was despite concerns raised by local residents over the unequal nature of the swap (in both land value and open space) and the loss of the park.

The Parliament's Upper House has voted to launch another inquiry into the swap and the South Australian chapter of the Returned Service League has voted to support the motion to have the original park retained as a war memorial, both to realise the 1942 petition, and to honour the scattered ashes of war veterans.

'[10] St Clair is part of Woodville Ward in the City of Charles Sturt local government area.