Population: 6.2 million.
Density: 23 people/square kilometer.
The population consists of 49 ethnic groups, in 4 main linguistic.
Families

The Lao-Tai Family includes 08 ethnic groups: Lao, Phouthai, Tai, Lue, Gnouane, Young, Saek and Thai Neua.

The Mon-Khmer Family includes 32 ethnic groups: Khmu, Pray, Singmou, Khom, Thene, Idou, Bid, Lamed, Samtao, Katang, Makong, Try, Trieng, Ta-oi, Yeh, Brao, Harak, Katou, Oi, Krieng, Yrou, Souai, Gnaheune, Lavy, Kabkae, Khmer, Toum, Ngouane, Meuang and Kri.

The Tibeto-Burmese Family includes 07 ethnic groups: Akha, Singsali, Lahou, Sila, Hayi, Lolo
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