Uyghur, formerly known as Turki or Eastern Turki, is a Turkic language of the Karluk branch, with 8 to 13 million native speakers. It is spoken primarily by the Uyghur people, most of whom live in what is now the Xinjiang Uyghur Autonomous Region of Western China. Apart from Xinjiang, significant communities of Uyghur speakers are also located in Kazakhstan, Kyrgyzstan, and Uzbekistan, and various other countries. Uyghur is a lingua franca of Xinjiang; it is widely used in both social and official spheres, as well as in print, television, and radio. Other ethnic minorities in Xinjiang also use Uyghur as a common language.