Census 2011
District population : 2,50,260
Growth : 80.36%
Sex Ratio : 899
Literacy : 56.99

Brief About Mon District
The District of Mon, which covers an area of 1786 Sq.km., is bounded on the North by Sibsagar District of Assam, on the South by Tuensang District of Nagaland and Myanmar (Burma), on the East by Myanmar (Burma) and on the West by Tuensang and Mokokchung Districts of Nagaland. On her Northeast lies the Tirap District of Arunachal Pradesh. The altitude of Mon district headquarters is 897.64 meters above sea level
HISTORY
The area, which is now known as MON DISTRICT and is placed on the Northeastern part of the State of Nagaland, was not brought under the Civil Administration till 1948. Even in the beginning of the 19th Century, a vast tract of land lying between the administered areas of Assam and Myanmar (Burma) was not brought under the Civil Administration by the British. By the year 1914, the Foreign and Political Department of the Government of India, by a Notification, extended the Assam Frontier Tract Regulation of 1880 to the Hills, which were either inhabited or frequented by Abors, Mishmis, Singphos, Nagas, Khamptis, Bhutias, Akas and Daflas. It is by this extension of the aforesaid Regulation, the Government of India brought the area under some administration in 1914 and the area was named as the North East Frontier Tract. Hence, the present MON DISTRICT was also brought under same Notification but practically, there was no Civil Administration till 1948.

In 1951, the plains portion of Balipara Frontier Tract, Tirap Frontier Tract, Abor Hills District and Mishmi Hills were transferred to the administrative jurisdiction of the Government of Assam. Thereafter, the remaining areas of the said North East Frontier together with the Naga Tribal Area of Tuensang including the present Mon (District) were re-named as the North East Frontier Agency. The Mon Sub-division under the Tuensang Frontier Division was created and the officer who was first posted, as the Assistant Political Officer was Mr. W.H. RYNJAH.

The district was carved out of the Tuensang district (Nagaland) on 21^st December 1973. The district was enlarged in 1991 by transferring some villages from the Tuensang district and creating some new administrative circle headquarters at Tobu (head by the Additional Deputy Commissioner), Mopong and Muknyakshu (headed by the Extra Assistant Commissioner each).

CLIMATE AND RAINFALL

The Mon District has a fairly moderate climate. Days are warm and nights are cool. Rainy season sets in the month of May and lasts till October. From November to April, the District has dry weather with relatively cool nights and bright and sunny days. The average relative humidity is 76 per cent and the average temperature is 24.4 degrees Celsius.

In the higher altitude, summers are pleasantly warm while winter is quite cold. The lower altitude especially those adjoining the plains of Assam experience hot summers but pleasant winters.

The average annual rainfall ranges from 2000mm to 3000mm, mostly occurring between May and October.