The Golen Horseshoe is a densely populated and industrialized region or urban agglomeration centred around the west end of Lake Ontario in Southern Ontario, Canada with outer boundaries stretching to Lake Erie to the south and Georgian Bay on the north. Most of it is also part of the Windsor-Quebec City corridor. With a population of 8.1 million people, it makes up slightly over a quarter (25.6%) of the population of Canada and contains approximately 75% of Ontario's population, making it one of the largest population concentrations in North America. Although it is a geographically named sub-region of Southern Ontario, Greater Golden Horseshoe is more frequently used today to describe the metropolitan regions that stretch across the area in totality.