According to the 2011 Census of India, Zunheboto town has a population of approximately 22,633, though the larger district is home to over 140,000 residents. The town has experienced steady growth due to rural-to-urban migration, driven by the pursuit of education and employment.
The population is overwhelmingly composed of the Sumi Naga tribe. Christianity is the dominant religion, with the vast majority of residents identifying as Baptist. Zunheboto boasts a high literacy rate—well over 85%—reflecting the community's strong emphasis on education. English is widely used for official and educational purposes, while Sumi is the primary language of daily life.