Canadian Census records for 1871 are available to the public. They give information on all household members - name, age, gender, country of birth, religion, ethnic origin, occupation, marital status and education.
There are 9 returns for the 1871 census but there are 3 that are of the most help genealogically:
Schedule 1: Return of the Living
Schedule 2: Return of the Dead
Schedule 4: Agricultural Return
Census records are available on microfilm from the Archives of Ontario, National Archives of Canada, on ILL (InterLibraryLoan) through a local library, or from your
local FHC (Family History Center).
You can search the free 1871 Ontario census index to heads of household at Library & Archives Canada
If you find a name of interest, you can order a copy of the census page from the National Archives. Requests for copies must include complete references
See AllCensusRecords.com for help and a link to the order form