 Being the most populous region in Australia, the Cumberland Plain is one of the fastest growing areas of the country in terms of population and it is home to a variety of Australian animal species, which are observable in the urban environments.The Cumberland Plain starts westwards of the inner west, towards south-western Sydney, and into the Greater Western Sydney area.It is within the local government areas of Blacktown, Burwood, Camden, the western portion of Campbelltown, Canada Bay, Canterbury-Bankstown, Cumberland, Fairfield, Georges River,
Hawkesbury, the Western outskirts of the Inner West Council, Liverpool, Parramatta, Penrith, Ryde, Strathfield, The Hills Shire, Wingecarribee, and Wollondilly.