Canadian census records are accessible on the Library and Archives Canada website for the years 1666 to 1921, as of 2015. Canadian census records after 1921 are maintained by Statistics Canada, which is prohibited by law from disclosing personal information contained in census data after 1921. Canadian law specifies that post-1921 census data becomes open for public review 92 calendar years after a given census.
Navigate to the Censuses page of the Library and Archives Canada website, and click on the year for which you would like census information. Much of the Canadian census information is available by province or territory. Clicking on the 1666 link for Quebec produces an image of the 1666 Quebec census, together with information about the arrangement structure, census extent and language of the census.
The Censuses page also maintains links to various compiled databases of Canadian censuses. Clicking on the Census of Canada 1891 link provides links detailing how the Canadian 1891 census was collected, the methodology used to transfer the census information from paper to microfilm, a list of common abbreviations, and assistance for further research. The 1891 census started on April 6, 1891 and was the third collection of Canadian national statistics.