Geographically, it is the largest among the North-east Indian states commonly known as the Seven Sister States. As in other parts of Northeast India, the people native to the state trace their origins from the Tibeto-Burman people. In recent times, large number of migrants from various parts of India and foreign lands have been affecting the state's population.
No reliable population count of the migrant population exists, and the percentage estimating the total actual population accordingly vary. Arunachal Pradesh has the highest number of regional languages in South Asia enriched with diverse culture and traditions.