The population of East Garo Hills district consists of two major groups – tribal & non-tribal. The tribal population of the district amounts to 96.54 % of the total population. The majority of the tribal population are the Garos, while the other indigenous inhabitants are the Hajongs, Rabhas, Koches, Rajbansis, Kacharis and Dalus. The small non-tribal population, including the Scheduled Castes is mostly concentrated in the urban settlements of Williamnagar and semi-urban habitations like Rongjeng, Songsak & Rongsak.