London is the largest urban area and capital city of the United Kingdom. It is located in the southeast of Great Britain. The London region covers an area of 1,579 square kilometres (610 sq mi), and had a population of 7,172,036 in 2001 and a population density of 4,542 people per square kilometre. A larger area, referred to as the London Metropolitan Region or the London Metropolitan Agglomeration covers an area of 8,382 square kilometres (3,236 sq mi), and had a population of 12,653,500 and a population density of 1,510 people per square kilometre.