The Census of Canada 1911 covered the nine provinces and two territories:
The census was taken on 1 June 1911. Among questions asked were the month and year of birth, and the year of immigration along with the country of birth for all those not born in Canada.
Index to every name enumerated in the 1911 Census of Canada with the personal data transcribed, links to images of the original census pages, and links to other records for individuals including: census records from other years, birth, marriage, death, and other records.
Transcription, proof reading, and linking is done by volunteers and no registration or payment is required to view the index.
Library and Archives Canada
"This database of 1911 census data allows researchers to search by geographic location only. As this is not a nominally indexed database, it is not searchable by family name. The information on these images can be used to prepare family or town/village histories, research immigration trends and a great deal more."