For the Prairie provinces of Manitoba, Saskatchewan and Alberta the 1916 census is the most recent available. Now it's in name indexed form on the LAC website thanks to "the contribution of Ancestry.ca, without which this project would not have been possible." That's from the credit line at the very bottom of the help file.
Search is available by: Keywords, Surname, Given Name(s), Age and Province. In addition there's an advanced search to permit search by: District Name, District Number, Sub-District Number, Sub-District Description, Division Number and, Page Number.
Search from http://www.bac-lac.gc.ca/eng/census/1916/Pages/1916.aspx
This LAC version contains 1,686,666 records whereas Ancestry's has 1,690,163. I wonder why the difference?