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Devon

Ceremonial county of England

Devon ( DEV-ən; historically also known as Devonshire -⁠sheer, -⁠shər) is a ceremonial county in South West England. It is bordered by the Bristol Channel to the north, Somerset and Dorset to the east, the English Channel to the south, and Cornwall to the west. The city of Plymouth is the largest settlement. The county has an area of 2,590 mi2 (6,700 km2) and had an estimated population of 1,254,506 in 2024. The south of the county is more densely populated than the north, with Plymouth in the south-west and the city of Exeter in the south-east. The seaside resorts of Torquay and Paignton are adjacent to each other in the south. The largest town in the north is Barnstaple. For local government purposes, Devon comprises a non-metropolitan county, with eight districts, and the unitary authority areas of Plymouth and Torbay. Devon County Council and Torbay Council collaborate through a combined county authority. Devon has a varied geography. It contains Dartmoor and part of Exmoor, two upland moors that are the source of most of the county's rivers, including the Taw, Dart, and Exe. The longest river in the county is the Tamar, which forms most of the border with Cornwall and rises in Devon's northwest hills. The southeast coast is part of the Jurassic Coast World Heritage Site, and characterised by tall cliffs that reveal the Triassic, Jurassic and Cretaceous geology of the region. The county gives its name to the Devonian geologic period, which includes the slates and sandstones of the north coast. Dartmoor and Exmoor have been designated national parks, and the county also contains, in whole or in part, five national landscapes. In the Iron Age, Roman and the Sub-Roman periods, the county was the home of the Dumnonii Celtic Britons. The Anglo-Saxon settlement of Britain resulted in the partial assimilation of Dumnonia into the kingdom of Wessex in the eighth and ninth centuries, and the western boundary with Cornwall was set at the Tamar by king Æthelstan in 936.