[1][2] The hundred spans a significant portion of the lower Light River, which flows from north east to south west through the area.

The localities of Reeves Plains, Korunye and Lower Light cross over the southern border of the hundred.

The District Council of Mudla Wirra was the first local government body established in the area.

Less than three years later, in September 1856, the District Council of Port Gawler was established by secession from Mudla Wirra including the portion within the Hundred of Grace.

In 1874, the District Council of Grace was established to administer the remainder of the hundred.