Map of St. Catharines, Canada

St. Catharines is a city in Ontario, Canada, with a population of about 136,803. It lies at 43.1713°N, 79.2427°W. St. Catharines is about 376 km (234 mi) southwest of Ottawa, the capital. The nearest city on our map is Niagara Falls, 16 km to the southeast.

St. Catharines at a glance

Where is St. Catharines?

• The 43rd largest city in Canada by recorded population.
• The 20th largest city in Ontario on this site.
• Located in the Northern and Western hemispheres.
• Daylight ranges from about 8 h 59 min on the shortest day to 15 h 23 min on the longest day (around 21 December and 21 June).

Cities near St. Catharines

• Niagara Falls — 16 km southeast
• Niagara Falls — 17 km southeast, United States
• Welland — 21 km south
• Amherst — 42 km southeast, United States
• Buffalo — 43 km southeast, United States
• Oakville — 47 km northwest
• Cheektowaga — 50 km southeast, United States
• Hamilton — 50 km west
• West Seneca — 51 km southeast, United States
• Burlington — 54 km northwest

Largest cities in Ontario

• Toronto — 2,794,356
• Ottawa — 1,017,449
• Mississauga — 717,961
• Brampton — 656,480
• Hamilton — 569,353
• London — 422,324
• Etobicoke — 365,000
• Markham — 338,503
• Vaughan — 323,103
• Kitchener — 256,885

Largest cities in Canada

• Toronto — 2,794,356
• Montréal — 1,762,949
• Calgary — 1,306,784
• Ottawa — 1,017,449
• Edmonton — 1,010,899
• Winnipeg — 749,607
• Mississauga — 717,961
• Vancouver — 662,248
• Brampton — 656,480
• Hamilton — 569,353

Map of Canada and all its cities →

Sources: place names, coordinates, populations and time zones from GeoNames (CC BY 4.0, data retrieved October 2026). Population figures are the latest values recorded in GeoNames; depending on the country they refer to the city proper, a municipality or a wider urban area, so they can differ from census or metro-area figures. Map © OpenStreetMap contributors.