Great news! The 1921 Canadian Census is fully indexed and online at Ancestry.ca and Ancestry.com
I've already spent a half hour finding family and adding corrections to the indexing. For example my grandmother Olive McGinnis is mistranscribed as "Clive". My father and uncles' names are also slightly mangled.
But I'm just happy the index is here! I was invited to the big launch party in Toronto today being put on by Ancestry.ca but sadly cannot attend. It would have been fun and interesting to hear the speakers they are providing.
Enjoy searching for your Canadian ancestors in the 1921 Census on