The eastern boundary of the Hundred is about 11+1⁄4 miles (18.1 km) along the crest of the range, mostly above 400 metres (1,300 ft) altitude, running roughly north–south.

[6] The western boundary is now mostly followed by a road, which includes the main street of Brinkworth and is below 200 metres (660 ft) altitude.

[5] The current Bounded Locality of Hart occupies almost the southern half of the Hundred.

[3] There was a Government Town named Anama surveyed in 1865, which was not fully developed, and officially ceased to exist in 1924.

[12] It was named in honour of Alexander Lyell McEwin Snr's daughter who had died after a brief illness, aged only 30.