As of the last official 2011 Census of India, the Kailasahar Municipal Council area had a population of 22,405. The broader subdivision encompasses a larger rural population.
* **Demographics:** The population is predominantly composed of Bengalis, alongside significant communities of indigenous Tripuri peoples and other tribes. * **Religion:** Hinduism is the majority religion, followed by a substantial Muslim minority, and smaller communities of Buddhists and Christians. * **Languages:** Bengali is the primary language spoken and serves as the lingua franca. Kokborok is spoken by the indigenous tribal population. Hindi and English are understood in official and educational contexts. * **Education:** Kailasahar boasts a high literacy rate, typically exceeding the state and national averages, hovering around 88% as of 2011.