The Tibeto-Burman migration to the Indian subcontinent started around 1000 BC. The Tibeto-Burman speakers of the subcontinent are found in Nepal, Northeast India, and the Eastern Himalayas.
The origin of the Tibeto-Burman speakers was located in the upper course of Yangtse and the Haong Ho (Yellow) rivers in North West China.
The Tibeto-Burman speaking groups categorised as tribes constitute 31.36% of the total population of Nepal, 12.5% in Assam, 68.79% in Arunachal Pradesh, 35.14% in Manipur, 94.44% in Mizoram, 86.46% in Nagaland and 31.76% in Tripura.