Census staff have carried out more than a million doorstep visits in Scotland since the deadline was extended to the end of May.
New figures released on Monday by the National Records of Scotland (NRS) show that workers have called on more than a million households since April 28.
At the time of deadline extension, 77.2% of households had responded to the census.
The NRS also said that from Monday their staff will offer people extra help to complete the paperwork on the doorstep.
It comes after homes were warned that failure to complete the census could result in a fine of up to £1000.
Angus Robertson, cabinet secretary for the constitution, external affairs and culture, said: “It is vital that we secure as high a response rate as possible so that the census can be effective in delivering its many benefits for future public services.
“Census data informs how and where public money is spent on vital services, from the building of new schools and hospitals to improving transport links and understanding health needs.
“From today, households will be offered extra help to complete their census at their door by a member of our team. I would encourage everyone to take up this offer and fill in their census as soon as possible.”
Paul Lowe, NRS chief executive, added: “Thank you to those who have already completed the census.
“By taking part you are ensuring not just your own needs are captured but those of your family and your community too.
“This information helps to ensure that the right services are provided in the right places. It is used by the Scottish Government, local councils, charities and a host of other organisations who provide essential services.”
“I would urge everyone who has not completed to do so immediately and before the end of May, to avoid the risk of prosecution.”
Scotland’s Census 2022 asks questions on a range of topics, including the types of accommodation people stay in, household relationships, age, sex, health and employment status.
New questions for this year’s census include use of British Sign Language (BSL), passports held, previous armed forces history and new voluntary questions on sexual orientation and trans status.