is the capital and largest city of Tajikistan. As of January 2020, Dushanbe had a population of 863,400 and that population was largely Tajik. Until 1929, the city was known in Russian as Dyushambe
, and from 1929 to 1961 as Stalinabad
, after Joseph Stalin. Dushanbe is located in the Gissar Valley, bounded by the Gissar Range in the north and east and the Babatag, Aktau, Rangontau and Karatau mountains in the south, and has an elevation of 750–930 m. The city is divided into four districts, all named after historical figures: Ismail Samani, Avicenna, Ferdowsi, and Shah Mansur.