The LAC says that it is their intention to make the 1921 Canadian Census available to researchers online, in the same format as previous censuses, as soon as possible after that date.
Here are a few facts about the 1921 Canadian Census -
It was taken on June 1, 1921
It is the sixth comprehensive decennial census to be taken since the creation of the Dominion
There will be five schedules with a total of 565 questions
241 commissioners and 11,425 enumerators were employed
The most important growth of the population was in the prairie provinces with 47% since the 1911 Census
the overall population of Canada was 8,788,483 individuals.
If you would like to see the other census records, go to http://www.collectionscanada.gc.ca/genealogy/022-911-e.html