Comment by jt2190

More specifically, just over 4% of the population:

> In 2021, 591,855 Ontarians (4.2% of the population) had French as one of their mother tongues. While this number varied little from 1991 to 2006 (+11,065 people), it increased steadily from 2006 to 2021 (+58,995 people).

- In 2021, 78.2% of these residents (463,120 people) had French as their only mother tongue, while 21.8% (128,740 people) had French along with other languages.

https://www150.statcan.gc.ca/n1/pub/89-657-x/89-657-x2023017...