Quoting from the Ancestry.ca web site:
With the recent release of the 1921 Census of Canada by Statistics Canada, it is now available for browsing on Ancestry.ca through a partnership with Library and Archives Canada!You can access the census records at http://www.ancestry.ca/census.
The 1921 Census of Canada is the most recent census available to the public and its records cover Canada's peak immigration period, the rise of aboriginal and women's rights and the formation of this country's modern identity.
Indexing all 8.8 million records is keeping us busy here at Ancestry.ca, but you won't have to wait long to get a first look at the collection. You can browse the images of the entire collection for FREE now via the link below! Be sure to return often for updates — the entire collection will be indexed and ready to search later this year.