Gilgit-Baltistan through the region has been proposed; see Khunjerab Railway for details. At the last census (1998), the population of Gilgit-Baltistan was 870,347. Approximately 14% of the population was urban. The estimated population of Gilgit-Baltistan in 2013 was over 2 million. The population of Gilgit-Baltistan consists of many diverse linguistic, ethnic, and religious sects, due in part to the many isolated valleys separated by some of the world's highest mountains. The ethnic groups include Shins, Yashkuns, Kashmiris, Kashgaris, Pamiris, Pathans, and Kohistanis. A significant number of people from Gilgit-Baltistan are residing in other parts of Pakistan, mainly in Punjab and Karachi.
Balti language "Byaltae" from , which, in Tibetan, means "water gorge." The historian Ptolemy, also a general in the army of Alexander the Great, named the region "Byaltae" in his book. In fact, Baltistan is the Persian translation of "Baltiyul", "homeland of Balti." Balti people are settled on both banks of the Indus River from Kargil district in the east to Haramosh Peak in the west and from the Karakoram in the north to Deosai National Park in the south. The Balti ethnicity is primarily Tibetan in origin, with some Dardic admixture. Balti is a Tibetic language. In some rural areas, the