The district is bounded on the north by Sibsagar district of Assam, on the northeast by Arunachal Pradesh, on the southeast by the nation Myanmar (Burma), on the south by Tuesang district of Nagaland and on the west by Mokokchung district. The district is situated at an altitude of 897.64 meters above sea level; the total area is 1,786 sq. km. Mon is the districts headquarter, as it is centrally located for the coronation of Angh’s (Chief). The district has four sub-divisions; Tobu, Tizit, Aboi (Champang), Naginimora.