Title: Tibet
Content:  which are generally not mutually intelligible. It is employed throughout the Tibetan plateau and Bhutan and is also spoken in parts of Nepal and northern India, such as Sikkim. In general, the dialects of central Tibet (including Lhasa), Kham, Amdo and some smaller nearby areas are considered Tibetan dialects. Other forms, particularly Dzongkha, Sikkimese, Sherpa, and Ladakhi, are considered by their speakers, largely for political reasons, to be separate languages. However, if the latter group of Tibetan-type languages are included in the calculation, then 'greater Tibetan' is spoken by approximately 6 million people across the Tibetan Plateau. Tibetan is also spoken by approximately 150,000 exile speakers who have fled from modern-day Tibet to India and other countries. Although spoken Tibetan varies according to the region, 
Title: Tibetic languages
Content:  The Tibetic languages are a cluster of Tibeto-Burman languages descended from Old Tibetan, spoken across the Himalayan Massif in East and South Asia, including the Tibetan Plateau and the Himalayas in Baltistan, Ladakh, Nepal, Sikkim, Bhutan, Assam and Arunachal Pradesh. Classical Tibetan is a major regional literary language, particularly for its use in Buddhist literature. Tibetan languages are spoken by some 6 million people, not all of whom are Tibetans. With the worldwide spread of Tibetan Buddhism, the Tibetan language has spread into the western world and can be found in many Buddhist publications and prayer materials; with some western students learning the language for translation of Tibetan texts. Outside Lhasa itself, Lhasa Tibetan is spoken by approximately 200,000 
Title: Tibetan people
Content:  The Tibetic languages are a cluster of mutually unintelligible Sino-Tibetan languages spoken by approximately 8 million people, primarily Tibetan, living across a wide area of East and South Asia, including the Tibetan Plateau and Baltistan, Ladakh, Nepal, Sikkim, and Bhutan. Classical Tibetan is a major regional literary language, particularly for its use in Buddhist literature. The Central Tibetan language (the dialects of Ü-Tsang, including Lhasa), Khams Tibetan, and Amdo Tibetan are generally considered to be dialects of a single language, especially since they all share the same literary language, while Dzongkha, Sikkimese, Sherpa, and Ladakhi are generally considered to be separate languages. Although some of the Qiang peoples of Kham are classified by China as ethnic Tibetans, the Qiangic languages are not Tibetic, but rather form their own branch of the Sino-Tibetan language family. 
Title: Tibeto-Burman languages
Content:  Over eight million people in the Tibetan Plateau and neighbouring areas in Baltistan, Ladakh, Nepal, Sikkim and Bhutan speak one of several related Tibetic languages. There is an extensive literature in Classical Tibetan dating from the 8th century. The Tibetic languages are usually grouped with the smaller East Bodish languages of Bhutan and Arunachal Pradesh as the Bodish group. Many diverse Tibeto-Burman languages are spoken on the southern slopes of the Himalayas. Sizable groups that have been identified are the West Himalayish languages of Himachal Pradesh and western Nepal, the Tamangic languages of western Nepal, including Tamang with one million speakers, and the Kiranti languages 
Title: History of Tibet (1950–present)
Content:  According to Barry Sautman, 92–94% of ethnic Tibetans speak Tibetan. Among those who do not are small Tibetan minorities in areas such as Qinghai. Primary school instruction is conducted almost exclusively in Tibetan, but instruction is bilingual from secondary school onward. Tibetologist Elliot Sperling has also noted that "within certain limits the PRC does make efforts to accommodate Tibetan cultural expression (and) the cultural activity taking place all over the Tibetan plateau cannot be ignored". Currently, "cultural Tibet" boasts three Tibetan-language television channels, one for each of the three main dialects spoken in China's Tibetan areas. The Tibet Autonomous Region possesses a 24-hour Central Tibetan-language TV channel (launched in 1999). For speakers of Amdo Tibetan, there is an Amdo Tibetan-language TV channel in Qinghai and for speakers of Khams Tibetan a recently launched TV satellite channel in Chengdu, the provincial capital of Sichuan. In October 2010, Tibetan students protested after the Chinese government published rules supporting the use of Mandarin Chinese in lessons and textbooks by 2015, with the exception of Tibetan language and English classes.
Title: Tibetan culture
Content:  The Tibetan language is spoken in a variety of dialects in all parts of the Tibetan-inhabited area which covers 1/2 Million square miles. Some of these dialects are tonal like the Chinese language, while others remain non-tonal. Historically Tibet was divided into three cultural provinces called U-Tsang, Kham and Amdo. Each one of these three provinces has developed its own distinct dialect of Tibetan. Most widely spoken is the Lhasa dialect, also called Standard Tibetan, which is spoken in Central Tibet and also in Exile by most Tibetans. In Kham the Khams Tibetan dialect is spoken and in Amdo the Amdo Tibetan dialect. The Tibetan dialects are subject to the Tibetic languages which are part of the Tibeto-Burman languages. Modern Tibetan derives from Classical Tibetan, which is the written norm, and from Old Tibetan. The official language of Bhutan, Dzongkha, is also closely related to Tibetan.
Title: Tibetan people
Content:  The Tibetan people are an East Asian ethnic group native to Tibet. Their current population is estimated to be around 6.7 million. In addition to the majority living in Tibet Autonomous Region of China, significant numbers of Tibetans live in the Chinese provinces of Gansu, Qinghai, Sichuan and Yunnan, as well as in India, Nepal and Bhutan. Tibetan languages belong to the Tibeto-Burman language group. The traditional or mythological, explanation of the Tibetan people's origin is that they are the descendants of the human Pha Trelgen Changchup Sempa and rock ogress Ma Drag Sinmo. It is thought that most of the Tibeto-Burman speakers in Southwest China, including Tibetans, are direct descendants from the ancient Qiang people. Most Tibetans practice Tibetan Buddhism, although some observe the indigenous Bon religion and there is a small Muslim minority. Tibetan Buddhism influences Tibetan art, drama and architecture, while the harsh geography of Tibet has produced an adaptive culture of Tibetan medicine and cuisine.
Title: Sino-Tibetan languages
Content:  Sino-Tibetan, also known as Trans-Himalayan in a few sources, is a family of more than 400 languages, second only to Indo-European in number of native speakers. The vast majority of these are the 1.3 billion native speakers of Chinese languages. Other Sino-Tibetan languages with large numbers of speakers include Burmese (33 million) and the Tibetic languages (six million). Other languages of the family are spoken in the Himalayas, the Southeast Asian Massif, and the eastern edge of the Tibetan Plateau. Most of these have small speech communities in remote mountain areas, and as such are poorly documented. Several low-level subgroups have been securely reconstructed, but reconstruction of a proto-language for the family as a whole is still at an early stage, so the higher-level structure of Sino-Tibetan remains unclear. Although the family is traditionally presented as divided into Sinitic (i.e. Chinese) and Tibeto-Burman branches, a common origin of the non-Sinitic languages has never been demonstrated. While Chinese linguists generally include Kra–Dai and Hmong–Mien languages within Sino-Tibetan, most other linguists have excluded them since the 1940s. Several links to other language families have been proposed, but none has broad acceptance.
Title: Tibetan people
Content:  As of the 2014 Census, there are about 6 million Tibetans living in the Tibet Autonomous Region and the 10 Tibetan autonomous prefectures in the provinces of Gansu, Qinghai, Yunnan and Sichuan. The SIL Ethnologue in 2009 documents an additional 189,000 Tibetic speakers living in India, 5,280 in Nepal and 4,800 in Bhutan. The Central Tibetan Administration's (CTA) Green Book (of the Tibetan Government in Exile) counts 145,150 Tibetans outside Tibet: a little over 100,000 in India; over 16,000 in Nepal; over 1,800 in Bhutan, and over 25,000 in other parts of the world. There are Tibetan communities in the United States, Australia, Brazil, Canada, Costa Rica, France, Mexico, Norway, Mongolia, Germany, Switzerland and the United Kingdom. 
Title: Lhasa Tibetan
Content:  taking place all over the Tibetan plateau cannot be ignored." Some scholars also question such claims because most Tibetans continue to reside in rural areas where Chinese is rarely spoken, as opposed to Lhasa and other Tibetan cities where Chinese can often be heard. In the Texas Journal of International Law, Barry Sautman stated that "none of the many recent studies of endangered languages deems Tibetan to be imperiled, and language maintenance among Tibetans contrasts with language loss even in the remote areas of Western states renowned for liberal policies... claims that primary schools in Tibet teach Mandarin are in error. Tibetan was the main language of instruction in 98% 

Question: where do they speak tibetan?
Answer: Tibet.