The localities of Forster, Purnong, and Claypans are within the hundred along with a large southern part of the bounded locality of Nildottie.

These divisions were short lived, however, as the Hundred of Forster and southerly adjacent Hundred of Bowhill were proclaimed in 1883 and Giles and Morphett were abolished.

In 1888 the District Councils Act 1887 forced the annexation of the Hundred of Forster by the District Council of Caurnamont, seated at Walker Flat on the other side of the river, bringing local government to the hundred for the first time.

Marne became a part of the consolidated District Council of Ridley in 1976 and then part of the much larger District Council of Ridley-Truro in 1991.

In 1997 Ridley-Truro was abolished by amalgamation with the district councils of Mannum, Morgan and part of Mount Pleasant to form the new Mid Murray Council, which locally administers the hundred at present.