Coordinates: 50°42′N 3°48′W / 50.7°N 3.8°W / 50.7; -3.8

Devon ( /ˈdɛvən/) is a large county in southwestern England. The county is sometimes referred to as Devonshire, although it has never been officially "shired" and that use often indicates a traditional or historical context. Nowadays, "Devonshire" is mostly a demonym.

The county shares borders with Cornwall to the west and Dorset and Somerset to the east. Its southern coast abuts the English Channel and its northern coast the Bristol Channel and Celtic Sea. The name "Devon" derives from the ancient Dumnonia, which was home to the independent kingdom of Brythonic Celtic speaking people who inhabited this area of the southwestern peninsula of Britain continuously from through the Roman era until partial absorption into the English-speaking Kingdom of Wessex some time in the eighth or ninth century, with some emigration to the sister Kingdom of Domnonee in Brittany taking place.

Devon is the fourth largest of the English counties by area and has a population of 1,141,600 making it the 11th most populous. The county town is the cathedral city of Exeter. In addition to Devon County Council, the county contains two unitary authorities (independent from Devon County Council's control): the port city of Plymouth and Torbay, a conurbation of seaside resorts. Plymouth is also the largest city in Devon. Much of the county is rural (including national park) land, with a low population density by British standards. It contains Dartmoor 954 km² (368 sq mi), the largest open space in southern England. It is the only English county to have two separate coastlines – a north and southern coastline.

Coordinates: 51°04′52″N 4°03′29″W / 51.081°N 4.058°W / 51.081; -4.058

North Devon is the northern part of the English county of Devon. It is also the name of a local government district in Devon. Its council is based in Barnstaple. Other towns and villages in the North Devon District include Braunton, Fremington, Ilfracombe, Instow, South Molton, Lynton and Lynmouth. The district was formed on 1 April 1974 as a merger of the Barnstaple municipal borough, the Ilfracombe and Lynton urban districts, and Barnstaple Rural District and South Molton Rural District.

The wider geographic area of North Devon is divided between North Devon District and the district of Torridge, based in Bideford.

North Devon is popular with retired people. The 2001 census showed 15 454 (18%) people aged 14 years and under, 54 413 (62%) aged 15–64 and 17 651 (20%) aged 65 and over. For comparison, the same age distributions across England are 19%, 65% and 16% respectively. People over 65 helped to live at home is below the national average. Life expectancy for men, at 76.9, is close to the national average, and increasing more slowly than throughout England. Female life expectancy is good at 82.1; and rising in line with England. There is a gap of 6 years in the life expectancy of people in the highest fifth of wards and the lowest fifth.