[1] One of the ten hundreds of the County of Sturt, it is bounded on the east entirely by the Murray River.

[1] According to South Australian historian Geoffrey Manning, the word Mobilong is a corruption of the Aboriginal term mupulawangk, meaning "soft reed place" as "reeds along the [Murray] river bank were used in the making of coiled baskets.

The following localities and suburbs of the Murray Bridge Council area are situated inside (or partly inside) the bounds of the Hundred of Mobilong: The District Council of Mobilong was established in 1884, bringing local government to the hundred.

From 1924 to 1977 the Corporate Town of Murray Bridge formed a second separate local government body within the hundred, and the district council expanded to govern most of land encapsulated by the easterly neighbouring hundreds of Burdett and Ettrick as well as land in the south neighbouring Hundred of Brinkley.

The town and district councils merged in 1977 to bring the hundred back under the governance of an expanded single body called the District Council of Murray Bridge.