Thailand's population is relatively homogeneous. More than 85% speak a dialect of Thai and share a common culture. This core population includes the central Thai (33.7% of the population, including Bangkok), Northeastern Thai (34.2%), northern Thai (18.8%), and southern Thai (13.3%).
The language of the central Thai population is the language taught in schools and used in government. Several other small Thai-speaking groups include the Shan, Lue, and Phutai.