Order by population (note: this is a work in progress)

1. Toronto - 4,612,191 https://lemmy.ca/c/toronto
2. Ottawa - 812,129 https://lemmy.ca/c/ottawa
3. Mississauga - 668,549 https://lemmy.ca/c/mississauga
4. North York - 636,000 https://lemmy.ca/c/north_york_ontario
5. Hamilton - 504,559 https://lemmy.ca/c/hamilton
6. Brampton - 433,806 https://lemmy.ca/c/brampton
7. Kitchener - 409,112 https://lemmy.ca/c/kitchener_ontario
8. London - 346,765 https://lemmy.ca/c/london
9. Windsor - 278,013 https://lemmy.ca/c/windsoron
10. Oshawa - 247,989
11. Vaughan - 238,866
12. Barrie - 182,041
13. Oakville - 165,616
14. Burlington - 164,415
15. Greater Sudbury - 157,857 https://lemmy.ca/c/greater_sudbury
16. St. Catharines - 131,989
17. Cambridge - 120,372
18. Guelph - 115,760
19. Kingston - 114,195 https://lemmy.ca/c/kingston_ontario
20. Chatham-Kent - 108,589
21. Thunder Bay - 99,334
22. Waterloo - 97,475 https://lemmy.ca/c/waterloo https://kbin.social/m/Waterloo
23. Picke