The Golden Horseshoe is a secondary region of SouthernOntario, Canada, which lies at the western end of Lake Ontario with outer boundaries stretching south to Lake Erie and north to Georgian Bay. The region is densely populated and industrialized. Most of it is also part of the Greater Toronto and Hamilton Area, Quebec City–Windsor Corridor and the Great Lakes Megalopolis. With a population of 8.76 million people in 2011, the Golden Horseshoe makes up over 26% of the population of Canada and contains more than 68% of Ontario's population, making it one of the largest population concentrations in North America. Although it is a geographically named secondary region of Southern Ontario, the Greater Golden Horseshoe is also used today to describe a broader region that stretches from the area of the Trent–Severn Waterway to at least the Grand River area, including centres outside of the core region.