In the seventies, 75 tribal ethnic groups were identified by the Govt.of India as primitive groups. In North East, 2 groups were identified as primitive groups. The Reangs living in the remote hamlets of the state were identified as the only PTG in Tripura. Since creation of TRP&PTG Deptt. in 1986, this department together with TRPC Ltd. which works under the administrative control of this department  have been implementing a number of welfare schemes for socio-economic, educational & cultural development of the Reang people of the state. Efforts of the department to rehabilitate the PTG people through teak plantation at the initial stage and subsequently rubber plantation practice of shifting cultivation dwindled among the Reang people to a remarkable extent. Besides the above, agri & horti based activities like bamboo plantation, plantation of banana, areca nut, orange, vegetable cultivation, animal husbandry activities, skill development training etc were provided to the PTG people. Basic needs like health care facilities through mobile medical units headed by departmental medical officers, health & education awareness campaign etc. were provided in the remote PTG hamlets. Creation of basic infrastructure like link road, dwelling house, community hall for socio cultural activities, market stall for unemployed youth etc were provided improvement of common living standard of the PTG.

As per survey, of 2013 PTG population in the state is 171,251 comprising 39,446 families. Literacy rate among the Reangs is 66.18% Most of them are inhabitants in Damcharra, Lalchari, Dasda, Pecharthal, Kumarghat, Manu, Chawmanu,  Ganganagar, Dumburnagar,  Durga Chowmuhani, Mungiakami, Ampi, Amarpur, Karbook, Matabari, Bokafa to habitat.