Kuala Lumpur, [a] officially the Federal Territory of Kuala Lumpur, [b] and colloquially referred to as KL, is the capital city and a federal territory of Malaysia.It is the largest city in the country, covering an area of 243 km 2 (94 sq mi) with a census population of 2,075,600 as of 2024. [8] Greater Kuala Lumpur, also known as the Klang Valley, is an urban agglomeration of 8.8 …