Wilton is a town of the Macarthur Region of Sydney in New South Wales, Australia in the Wollondilly Shire. It is located around 80 km south we…Wilton is a town of the Macarthur Region of Sydney in New South Wales, Australia in the Wollondilly Shire. It is located around 80 km south west of the Sydney CBD, within close proximity of Cataract Dam. It is an exurb of Greater Sydney under development, which includes the new estate of Bingara Gorge.