As of the 2011 Census of India, the Dharmanagar Municipal Council had a population of 45,887, though current estimates place the broader urban agglomeration significantly higher.
The demographic composition is predominantly Bengali Hindus, who constitute the vast majority of the population. There are also notable indigenous populations in the surrounding rural areas, including Tripuri communities, as well as minority Muslim and Christian populations.
Dharmanagar is renowned for its high educational standards, boasting a literacy rate of over 90%, which is well above the national average. The primary languages spoken are Bengali and Kokborok, with English widely used in official, commercial, and educational contexts.
