Dhemaji district shelters a population of 571944 as per 2001 census, which includes 294643 males and 277301 females, sex ratio being 936 females per thousand males. The average density is 176 per Sq. Km. The Schedule tribe and schedule caste population of the district works out to be 47.29% and 5.33% respectively of the total population.
The urban population is only 1.85%, which indicates the predominantly rural character of the district. The literacy rate is 41.69% while the female literacy rate is 13.6%. The rate of growth of population in the district between 1971 and 1991 was 104.48%, which incidentally, is the highest, recorded in the state. The annual rate of growth of population worked out to be 5.22% compared to the overall state growth of 2.62%.
In general there is a huge chunk of Other Backward Classes (OBC) population comprising of Ahoms, Chutiyas, Konches etc. The Schedule tribes include Mishings, Sonowal Kacharis Bodos, Deoris, Lalungs, Hazongs, Ex-tea garden community makes up only a negligible part of the total population. The principal languages of the region are Assamese, Mishing, Bodo and Bengali. The principal religion is Hinduism. However, Christianity and Islam are also practiced to a limited extent. there is almost no record of Communal violence.