South Windsor is a suburb of the town of Windsor, on the outskirts of Sydney, in the state of New South Wales, Australia. It is generally bounded in the west by Rickabys Creek and in the east by South Creek, both tributaries of the Hawkesbury River. In the 2011 census, South Windsor recorded a population of 5,879 people, making it more populous than Windsor to the north, which is the commercial centre. It is also home of the high school Bede Polding College. South Windsor was previously called "Newtown"; the new name of "South Windsor" was assigned on 10 September 2004.