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Cornwall has a population of 556,000 and covers an area of 3,563 km2(1,376 sq mi). ... The administrative centre of Cornwall, and only city in the county, is Truro. Cornwall is the homeland of the Cornish people and the cultural and ethnic origin of theCornish diaspora.

And Also, The Cornish people or Cornish (Cornish: Kernowyon) are an ethnic group associated with Cornwall and a recognised national minority in the United Kingdom, which can trace its roots to the ancient Britons who inhabited southern and central Great Britainbefore the Roman conquest.