Halbury is a former railway town in South Australia, west of the Clare Valley, halfway between Balaklava and Auburn.

[4] The Gladstone railway line ran from Hamley Bridge through Balaklava to Blyth and further on into the Mid North of the state.

After Halbury, the railway line veered to the north-east, travelling on to the towns of Hoyleton, Kybunga and further north to Blyth.

The text on the plaque affixed to the sign reads: "This is the site of the Halbury railway siding, 74 Miles, 1 Chain.

The hillier east of the locality is part of the District Council of Clare and Gilbert Valleys.