West Devon is a local government district and borough in Devon, England. Towns and villages in the district include Chagford, Okehampton, Princetown and Tavistock, where the council is based. The district was formed on 1 April 1974, under the Local Government Act 1972, as a merger of the previous municipal borough of Okehampton, Okehampton Rural District, and Tavistock Rural District. West Devon contains most of Dartmoor. From Wikipedia