As of 2001[update] India census, Deomali had a population of 6060. Males constitute 53% of the population and females 47%. Deomali has an average literacy rate of 62%, higher than the national average of 59.5%: male literacy is 69% and, female literacy is 55%. In Deomali, 17% of the population is under 6 years of age.In 2001 Tirap Government College was shifted to Deomali from Khonsa. Presently, the college has 13 faculty members and 327 students.