Ontario Cities by Population (1 to 20)
Search cities in Ontario, Canada. Find out the population, time zones, current time and more Ontario facts.
| City | Region | Country | Population | |
|---|---|---|---|---|
| Toronto | Ontario | Canada | 2,600,000 | |
| Ottawa | Ontario | Canada | 812,129 | |
| Mississauga | Ontario | Canada | 668,549 | |
| Hamilton | Ontario | Canada | 519,949 | |
| Brampton | Ontario | Canada | 433,806 | |
| London | Ontario | Canada | 346,765 | |
| Oshawa | Ontario | Canada | 308,875 | |
| Windsor | Ontario | Canada | 278,013 | |
| Markham | Ontario | Canada | 261,573 | |
| Vaughan | Ontario | Canada | 238,866 | |
| Kitchener | Ontario | Canada | 233,700 | |
| Richmond Hill | Ontario | Canada | 185,541 | |
| Barrie | Ontario | Canada | 182,041 | |
| Nepean | Ontario | Canada | 180,000 | |
| Oakville | Ontario | Canada | 165,697 | |
| Burlington | Ontario | Canada | 164,415 | |
| Greater Sudbury | Ontario | Canada | 157,857 | |
| St. Catharines | Ontario | Canada | 131,989 | |
| Cambridge | Ontario | Canada | 120,372 | |
| Guelph | Ontario | Canada | 115,760 |