Kuala Lumpur is the capital and the largest city of Malaysia in terms of population. The city proper, making up an area of 243 km2 (94 sq mi), has a population of 1.6 million as of 2010. Greater Kuala Lumpur, also known as the Klang Valley, is an urban agglomeration of 7.2 million. It is the fastest growing metropolitan region in the country, in terms of population and economy.