Cornwall Cornwall Cornwall (; ) is a county in South West England in the United Kingdom. The county is bordered to the north and west by the Celtic Sea, to the south by the English Channel, and to the east by the county of Devon, over the River Tamar which forms most of the border between them. Cornwall forms the westernmost part of the South West Peninsula of the island of Great Britain. The furthest southwestern point of the island is Land's End; the southernmost point is Lizard Point. Cornwall has a population of and covers an area of . The
St Just in Penwith is the most westerly town in mainland Britain and is situated approximately west of Penzance along the A3071. St Just parish, which includes Pendeen and the surrounding area, has a population of 4690 (4,637 at the 2011 census). An electoral ward also exists: the population of this ward at the same census was 4,812. St Just lies within the Cornwall Area of Outstanding Natural Beauty (AONB). Almost a third of Cornwall has AONB designation, with the same status and protection as a National Park. St Just is one of only two towns included within the Cornwall AONB. The identity of