[1] The localities of Coobowie, Edithburgh, Honiton, Sultana Point and parts of Port Moorowie, Wool Bay and Yorketown are within the hundred boundaries.

The Corporate Town of Yorketown, at the north of the hundred, seceded from Melville in 1879.

Then, in 1882, the Corporate Town of Edithburgh in the east of the hundred also seceded from Melville.

In 1932 Melville council was abolished and the south-west portion in the Hundred of Melville was combined with the District Council of Dalrymple and the Corporate Town of Yorketown to form the new District Council of Yorketown.

The Town of Edithburgh was annexed by Yorketown council circa 1980, bringing the hundred back under local governance of a single body for the first time since 1879.