More than six million of Australia's nine million households have completed the census, despite problems with the online national survey.
The result is well above the 4.5 million responses the Australian Bureau of Statistics had expected after the online form was taken down for 40 hours due to cyber attacks.
"We actually thought that as few as 50 per cent of the Australian population would respond before we needed to start visiting households," census head Duncan Young told Fairfax Media on Monday.
Moving from a paper form to an online submission has helped track participation rates during the census operation, a census media spokesman told AAP on Monday.
"With the high number of Australians completing the census online in 2016, we have more up to date insights into participation rates in real time," he said.
