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Thailand
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1 (National)
Thai
[tha]
1 (National). De facto national language. 20,200,000 in Thailand (2000). 400,000 Khorat (1984). 4,700,000 mother-tongue Thai are ethnic Chinese, or 80% of the Chinese (1984). Population total all countries: 20,421,280.
4 (Educational)
Korean
[kor]
4 (Educational).
Lahu
[lhu]
4 (Educational). 32,000 in Thailand (Johnstone and Mandryk 2001).
Lisu
[lis]
4 (Educational). 40,000 in Thailand (Bradley 2007).
Lü
[khb]
4 (Educational). 83,000 in Thailand (Johnstone and Mandryk 2001).
Thai, Northern
[nod]
4 (Educational). De facto language of provincial identity in northern provinces. 6,000,000 in Thailand (1983 SIL). Population total all countries: 6,029,440.
5 (Dispersed)
Chinese, Mandarin
[cmn]
5 (Dispersed). 5,880 in Thailand (1984).
5 (Developing)
Akha
[ahk]
5 (Developing). 56,600 in Thailand (Bradley 2007).
Chinese, Hakka
[hak]
5 (Developing). 58,800 in Thailand (1984).
Chinese, Min Dong
[cdo]
5 (Developing).
Chinese, Min Nan
[nan]
5 (Developing). 1,080,000 in Thailand. 1,060,000 Chaochow (18%), 17,600 Fujian (less than 1%), 5,880 Hainanese (less than 1%) (1984).
Chinese, Yue
[yue]
5 (Developing). 29,400 in Thailand (1984).
Hmong Daw
[mww]
5 (Developing). 32,400 in Thailand (2000).
Iu Mien
[ium]
5 (Developing). 40,000 in Thailand (1999).
Karen, Pwo Northern
[pww]
5 (Developing). 60,000 (1983 SIL).
Karen, Pwo Western Thailand
[kjp]
5 (Developing). 50,000 in Thailand (1998).
Karen, S’gaw
[ksw]
5 (Developing). 200,000 in Thailand (2006 Mahidol University).
Khmer, Northern
[kxm]
5 (Developing). 1,400,000 (2006 Mahidol University), decreasing. Very few monolingual.
Khmu
[kjg]
5 (Developing). 31,400 in Thailand (2000).
Khün
[kkh]
5 (Developing). 6,280 in Thailand (2000).
Lawa, Western
[lcp]
5 (Developing). 8,000 (2007 R. Nahhas). Ethnic population: 8,500.
Mal
[mlf]
5 (Developing). 3,000 in Thailand (1982 SIL).
Malay, Pattani
[mfa]
5 (Developing). 1,000,000 (2006 Mahidol University).
Pa’o
[blk]
5 (Developing). 740 in Thailand (2000).
Shan
[shn]
5 (Developing). 95,000 in Thailand (2006 Mahidol University).
Tai Dam
[blt]
5 (Developing). 700 in Thailand (2004).
Thai Sign Language
[tsq]
5 (Developing). 51,000 profoundly, prelingually deaf people in Thailand (1997 C. Reilly). 20% of deaf children go to school to learn it.
Thai Song
[soa]
5 (Developing). 32,300 (2000).
Thai, Southern
[sou]
5 (Developing). De facto language of provincial identity in southeasternmost 15 provinces. 4,500,000 (2006 Mahidol University). 1,500,000 to 3,000,000 or more Muslim Tai (2001).
Wa, Parauk
[prk]
5 (Developing). 6,700 in Thailand (2008 P. Hopple).
6a (Vigorous)
Ban Khor Sign Language
[bfk]
6a (Vigorous).
Blang
[blr]
6a (Vigorous). 1,200 in Thailand (1998 SIL).
Hmong Njua
[hnj]
6a (Vigorous). 60,000 in Thailand (Hattaway 2000).
Karen, Phrae Pwo
[kjt]
6a (Vigorous).
Kayah, Eastern
[eky]
6a (Vigorous). 18,000 in Thailand (2000). 2 camps of 15,000 refugees from Myanmar.
Lahu Shi
[lhi]
6a (Vigorous). 15,000 in Thailand (2007).
Lamet
[lbn]
6a (Vigorous). 100 in Thailand.
Lawa, Eastern
[lwl]
6a (Vigorous). 7,000 (2007 R. Nahhas). Ethnic population: 8,000.
Malay, Satun
[meo]
6a (Vigorous).
Nyaw
[nyw]
6a (Vigorous). 50,000 (1990 A. Diller).
Phu Thai
[pht]
6a (Vigorous). 470,000 in Thailand (2006 Mahidol University). Population total all countries: 866,000.
Phuan
[phu]
6a (Vigorous). 200,000 in Thailand (2006 Mahidol University). Population total all countries: 306,000.
Prai
[prt]
6a (Vigorous). 20,000 in Thailand (2001). Possibly 3,000 Ban Wen dialect speakers. Population total all countries: 41,900.
Pray 3
[pry]
6a (Vigorous). 38,800 (2000).
Sô
[sss]
6a (Vigorous). 70,000 in Thailand (2006 Mahidol University).
Thai, Northeastern
[tts]
6a (Vigorous). De facto language of provincial identity in east, northeast provinces. 15,000,000 (1983 SIL). At least 1,000,000 in Bangkok. Kalerng has a few thousand speakers (1990 A. Diller).
Yoy
[yoy]
6a (Vigorous). 5,000 in Thailand (1990 A. Diller). Population total all countries: 6,000.
6b (Threatened)
Aheu
[thm]
6b (Threatened). 450 in Thailand (Bradley 2007). Population total all countries: 700. Ethnic population: 1,500 (Bradley 2007).
Bisu
[bzi]
6b (Threatened). Ethnic population: 500 (Bradley 2007).
Cham, Western
[cja]
6b (Threatened). 4,000 in Thailand.
Kuy
[kdt]
6b (Threatened). 400,000 in Thailand (2006 Mahidol University). Few monolinguals. Population total all countries: 452,800.
Moklen
[mkm]
6b (Threatened). 1,500 (1984 D. Hogan). Ethnic population: 4,000 (2000 D. Bradley).
Mon
[mnw]
6b (Threatened). 108,000 in Thailand (Bauer 1984). 70,000–120,000, total population (Bauer 1984). 1983 census estimated 100,000; about 50,000 L1 speakers (Foster 1972; Smalley 1994).
Nyeu
[nyl]
6b (Threatened). 200.
Phunoi
[pho]
6b (Threatened).
Tai Nüa
[tdd]
6b (Threatened).
Tonga
[tnz]
6b (Threatened). 180 in Thailand (2007). Population total all countries: 195. Ethnic population: 300 (2000 D. Bradley).
Urak Lawoi’
[urk]
6b (Threatened). 2,000 (Bradley 2007). Ethnic population: 3,000 (Bradley 2007).
7 (Shifting)
Akeu
[aeu]
7 (Shifting). 400 in Thailand (2006).
Bru, Western
[brv]
7 (Shifting). 20,000 in Thailand (1991).
Chiangmai Sign Language
[csd]
7 (Shifting).
Jehai
[jhi]
7 (Shifting). Ethnic population: 150 (Bradley 2007).
Kensiu
[kns]
7 (Shifting). 300 in Thailand.
Lua’
[prb]
7 (Shifting). 6,280 (2000).
Moken
[mwt]
7 (Shifting). 2,000 in Thailand (Bradley 2007).
Mpi
[mpz]
7 (Shifting). 900 (Nahhas 2005), decreasing. Ethnic population: 1,500 (Nahhas 2005).
Nyahkur
[cbn]
7 (Shifting). 1,500 (2006 C. Shimmin), decreasing. No monolinguals. Ethnic population: 3000 (Thongkum 1984).
Saek
[skb]
7 (Shifting). 11,000 in Thailand (Johnstone 1993).
Tai Ya
[cuu]
7 (Shifting). 400 in Thailand (Dawkins and Kirkland 2008), decreasing. Ethnic population: 1,000 in Thailand.
8a (Moribund)
Chong
[cog]
8a (Moribund). 500.
Mlabri
[mra]
8a (Moribund). 130 in Thailand (Bradley 2007). Population total all countries: 154.
Palaung, Pale
[pce]
8a (Moribund). 5,000 in Thailand (1989).
Ugong
[ugo]
8a (Moribund). 80 (2000 D. Bradley). Ethnic population: 500.
Yong
[yno]
8a (Moribund). 12,600 (2000).
8b (Nearly extinct)
Kintaq
[knq]
8b (Nearly extinct). 1 in Thailand (2007 SIL).
Mok
[mqt]
8b (Nearly extinct). 7 (Wurm and Hattori 1981).