Thailand is a country with many distinct ethnic groups, like other countries, including the majority Thai and numerous hill tribes living primarily in the mountains of the north. The Thai (or ethnic Tai/Dai) and Thai Chinese make up approximately 90% of the nation's population of approximately 67.5 million.
Khmer and Mon-Khmer make up approximately around 6%, the Malays of Southern Thailand make up around 3%, hill tribes like Hmong(Mien), Karen and other small hill tribes make up around 1%. There are 70 ethnic groups in Thailand, including 24 groups of Tai peoples.