It has been transcribed and you can access it in Ancestry.
This census of Canada covered the nine provinces and two territories of Canada as of 1921: Alberta, British Columbia, Manitoba, New Brunswick, Nova Scotia, Ontario, Prince Edward Island, Quebec, Saskatchewan, the Yukon Territory, and the Northwest Territories.
The census provides many details about individuals and families including:
Canada's population in 1921 was tallied at 8,788,483. This represented a 21.95% increase over 1911, which was not as high as expected. Origins of the population according to the census: 55.4% British (4,868,903), 27.9% French (2,452,751); next highest was German at 3.35% (294,636). Immigrants in 1921: 148,477, of whom 75,673 were from the UK and 48,059 from the USA. Next highest nationalities were Polish and Italian.
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