Australian Census Information
Australia federated in 1901. Commonwealth censuses were conducted in 1901, 1911, 1921, 1933, 1947, 1954, 1966, 1971, 1976, 1981, 1986, 1991 and 1996. Each was destroyed after statistical extractions had been made. However, the census taken in 2001 for the first time provided for census returns to be retained, if those completing the returns requested it. More than 50% of the population took this option and the same option was again provided in following censuses. The retained returns will not be available for public inspection for 100 years.