Ontario Cities by Population (21 to 40)
Search cities in Ontario, Canada. Find out the population, time zones, current local time and more Ontario facts.
| City | Region | Country | Time Zone | Population | |
|---|---|---|---|---|---|
| Ajax | Ontario | Canada | Eastern Daylight Time | 119,677 | |
| Guelph | Ontario | Canada | Eastern Daylight Time | 115,760 | |
| Kingston | Ontario | Canada | Eastern Daylight Time | 114,195 | |
| Thunder Bay | Ontario | Canada | Eastern Daylight Time | 107,909 | |
| Waterloo | Ontario | Canada | Eastern Daylight Time | 104,986 | |
| Pickering | Ontario | Canada | Eastern Daylight Time | 91,771 | |
| Kanata | Ontario | Canada | Eastern Daylight Time | 90,000 | |
| Brantford | Ontario | Canada | Eastern Daylight Time | 87,759 | |
| Newmarket | Ontario | Canada | Eastern Daylight Time | 84,224 | |
| Niagara Falls | Ontario | Canada | Eastern Daylight Time | 82,000 | |
| Peterborough | Ontario | Canada | Eastern Daylight Time | 81,032 | |
| Willowdale | Ontario | Canada | Eastern Daylight Time | 79,440 | |
| Sarnia | Ontario | Canada | Eastern Daylight Time | 72,125 | |
| Sault Ste. Marie | Ontario | Canada | Eastern Daylight Time | 72,051 | |
| Caledon | Ontario | Canada | Eastern Daylight Time | 66,502 | |
| Waterfront Communities-The Island | Ontario | Canada | Eastern Daylight Time | 65,913 | |
| Norfolk County | Ontario | Canada | Eastern Daylight Time | 60,847 | |
| Aurora | Ontario | Canada | Eastern Daylight Time | 55,445 | |
| Woburn | Ontario | Canada | Eastern Daylight Time | 53,485 | |
| Welland | Ontario | Canada | Eastern Daylight Time | 52,293 |