Metchosin, British Columbia, incorporated as a district municipality in 1984, population 4,708 (2016 census), 4,803 (2011 census). The District of Metchosin is located on Vancouver Island. It overlooks the Juan de Fuca Strait. Metchosin is part of the Greater Victoria area. From the late 1800s to 1958, a quarantine station operated at William Head in Metchosin. Many immigrants arriving to Canada by ship were quarantined at William Head before being allowed to enter the country. This was done in an effort to prevent the spread of infectious diseases common on overcrowded ships. In addition, from 1924 to 1956, there was a leper colony on nearby Bentinck Island.