Bargo is a town in the Macarthur Region of Sydney in New South Wales, Australia, in the Wollondilly Shire. It is located approximately halfway …Bargo is a town in the Macarthur Region of Sydney in New South Wales, Australia, in the Wollondilly Shire. It is located approximately halfway between Campbelltown and Bowral, about 100 km south west of the Sydney CBD.