Helensburgh is a small town in New South Wales, Australia. Helensburgh is located 45 kilometres south of the Sydney central business district and 34 kilometres (21 mi) north of Wollongong. Helensburgh is in the local government area of Wollongong City Council and marks the northern end of the Illawarra region. It is approximately halfway between Sydney and Wollongong, at the southern end of the Royal National Park. At the 2006 census, Helensburgh had a population of 5,330 people.