Kabul is the capital and largest city of Afghanistan. It is within the jurisdiction of Kabul District and has an estimated population of 5,333,284 people. Located in the eastern half of the country, forming part of the Kabul Province, the city is administratively divided into five zones and 22 municipal districts. The native population of Kabul primarily speaks Persian, locally referred to as Persian Dari, using regional Dari dialects with a distinctive Kabuli accent. Kabul has long been Afghanistan's political, cultural and economic center. Rapid urbanization has made it the country's primate city. It is located high in a narrow valley in the Hindu Kush mountain range, and is bounded by the Kabul River. At an altitude of 1,791 m (5,876 ft) above sea level, it is one of the highest capital cities in the world. The center of the city contains its oldest neighborhoods, including the areas of Bala Hisar, Deh Afghanan and Murad Khani.