The name of the district is drived from Subansiri river, its stream twin river Kurng and Kumey. The Subansiri river is the triburaty of Brahmaputra river, that flows from Tibet.By a Govt. of India Notification of 1914, the area covered by this district become a part of the ” Northern Section” of the “North East Frontier Track” within which entire British subject was regulated by a Inner Line in 1919. This Track was renamed as the “Subansiri Frontier Track” with the name of Kimin Sub-Agency and its Headquarter continued to be at Lakhimpur-Kimin.
The Kurung Kumey district of Arunchal Pradesh is lying approximatley between 91.20′ to 55.40′ East Longitude and 28.30′ to 38.04′ North Latitudes.The district is surrounded by China in the north, East Kameng District in the west, Upper Subansiri District and Lower Subansiri District and in the southern boundary boundary adjoins by Papum Pare District in the East of the Arunchal Pradesh.The topography of the district is mostly mountainous a great part of its falls within the medium mountain Zone consisting peak & valleys.The altitude of the district headquarter Yangte about 4300 feet.
The district falls within 15′ to 20′ temperature zone often the temperature falls to 5 to 7 degree in winter.The regions is very cold during winter and very hot during summer.Rainfall is very high among the other districts due to very hilly and high geographical terrain.The district is most of time covered by clouds.The area is windy in nature.