Keswick Keswick is a community located in south central Canadian province of Ontario. Situated north of Toronto on Cook's Bay (part of Lake Simcoe), Keswick is part of the Town of Georgina. In the Canada 2011 Census, the municipal population of Keswick was 25,527. Keswick is situated on the east shores of Lake Simcoe, along Cook’s Bay. It is bordered in the south by Ravenshoe Road, the east by Woodbine Avenue, the North by Old Homestead Road, and the West by Lake... [read more]