The Library and Archives Canada has just sent this notice out –
“The LAC is pleased to announce that the Census for Lower Canada, 1831 database is now available online. The Census for Lower Canada, 1831 is partly nominal and therefore only contains the names of heads of family, their occupation, and the number of residents for each family.
Users can search this new database by the name of heads of family, as well as by geographical information such as district and sub-district names”.
It is available at www.bac-lac.gc.ca/eng/census/1831/Pages/1831.aspx