Keswick is a community located in south central Canadian province of Ontario. Situated north of Toronto on Cook’s Bay, Keswick is part of the Town of Georgina. Keswick was originally known as Medina, and was part of the Township of North Gwillimbury before becoming part of the Township of Georgina. The area was formerly considered part of “cottage country” for those who lived in Toronto up until the late 1980s, when major development further opened up access to Keswick, expanding its population. Included in Keswick is the Keswick Marsh, part of the Holland Marsh. Having been built mainly as a cottage community, Keswick is fairly long north to south as it hugs the shore of Lake Simcoe. Keswick’s population was 25,527 in 2011. Specific demographics for Keswick are not available, since it is counted as part of Georgina.