Back in 1825, the population of Lower Canada (Quebec) was less than half a million (and back then the English speaking proportion of Lower Canada was much greater than it is today).
The following estimate was made for 1822, by Bouchette, of the population of Lower Canada.
Recapitulation
Districts. North side. South side. Total
Québec 56,359 77,315 133,674
Trois-Rivières 18,882 28,974 47,856
Montréal 123,904 120,082 243,986
Clergy and Convents 449
Protestants in Parish’s 1,500
Grand Total 199,145 226,371 427,465
https://www150.statcan.gc.ca/n1/pub/...064809-eng.htm