The Hundred of Townsend is a cadastral unit of hundred located in the Limestone Coast region in the south-east of South Australia.

[3] It was named in April 1878 by Governor William Jervois for South Australian settler and member of parliament, William Townsend.

[2][4] There are no townships within the hundred, the nearest township being that of Lucindale about 5 kilometres (3.1 mi) east of the central eastern border of the hundred.

The Government Town of Downer, also known as Avenue for the "parallel arrangement of the swamp flats and stringybark ridges in the area",[5] was surveyed and proclaimed within the hundred on 9 December 1886.

[7] In 1940 the name of the locality was officially changed to Avenue with the modern bounded locality of Avenue Range now surrounding the planned town site and covering all land in the hundred apart from a strip on the eastern side which sits in the bounded locality of Lucindale.