2016 Australian census
| Seventeenth Australian census | |
|---|---|
2016 census logo
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| General information | |
| Country | Australia |
| Date taken | 9 August 2016 |
| Total population | 23,401,892 |
| Percent change |
 8.8% |
| Most populous state/territory | New South Wales (7,480,228) |
| Least populous state/territory | Norfolk Island (1,748) |
The 2016 Australian census was the seventeenth national population census held in Australia. The day used for the census, was Tuesday 9 August 2016. The total population of the Commonwealth of Australia was counted as 23,401,892 – an increase of 8.8% or 1,894,175 people since the 2011 census.Norfolk Island joined the Australian Census for the first time in 2016, adding 1,748 to the population.
Results from the 2016 census were available on the Australian Bureau of Statistics website from 27 June 2017.
The 2016 Census had a response rate of 95.1% and a net undercount of 1.0%, with 63% of people completing the Census online.
A move was undertaken by the Australian Bureau of Statistics (ABS) to largely implement the Census on-line through their website and logins rather than through traditional paper forms. The 2016 Census was unavailable for 43 hours from 7.30 pm on 9 August due to a series of events which prompted the ABS to take the form offline. The 15th Chief Statistician, David Kalisch, said the website was closed after multiple internet denial-of-service attacks targeted the online form. The Australian Signals Directorate (ASD) confirmed the incident was a DDoS attack and it did not result in any unauthorised access to, or extraction of, any personal information. The online census webpage was back up at 2:30 pm on 11 August. A Senate Inquiry was held into the Census events. An Independent Panel established by the Australian Statistician to quality assure the data from the 2016 Census found it was fit for purpose, comparable to previous Australian and International Censuses and can be used with confidence.
"The Independent Assurance Panel I established to provide extra assurance and transparency of Census data quality concluded that the 2016 Census data can be used with confidence."
The Census form had 51 questions relating to the characteristics of individuals, plus an extra 9 questions relating to households.
The population counts for Australian states and territories were that New South Wales remains the most populous state, with 7,480,228 people counted, ahead of Victoria (5,926,624) and Queensland (4,703,193). Australian Capital Territory (ACT) experienced the largest population growth of any state or territory over the past five years, with an increase of 11.2% while Tasmania had the smallest growth at 3.0% since the last census in 2011.
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