This article is about the demographic features of the population of Thailand, including population density, ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of the population.

Thailand's population is relatively homogeneous, however, this is changing due to immigration. Ethnic Thais make up the majority of the population with 75 percent of all inhabitants. Thai Chinese make up 14 percent with the remaining 11 percent made up of various other groups.

The language of the central Thai population is the educational language and administrative language. Several other small Tai groups include the Shan, Lue, and Phutai.

Malay and Yawi-speaking Muslim's language of the south comprise another significant minority group (2.3%). Other groups include the Khmer; the Mon, who are substantially assimilated with the Thai; and the Vietnamese. Smaller mountain-dwelling tribes, such as the Hmong and Mein, as well as the Karen, number about 788,024. Some 300,000 Hmong, who ironically have lived this area for more generations than the Thais themselves, are to receive citizenship by 2010.^{[citation needed]}