Williamstown is a suburb in Melbourne, Victoria, Australia, 8 km south-west from Melbourne's central business district. Its Local Government Area is the City of Hobsons Bay. At the 2006 Census, Williamstown had a population of 12,733.Williamstown is approximately 15 minutes by car from Melbourne via the West Gate Freeway or a 30-minute train journey from Flinders Street Station. Ferries from