Mamit District with its headquarters at Mamit was etched out from the erstwhile Aizawl District under Mizoram Govt. Notification No.A.600Ill2ll95-GAD dated 11.3.98. The new District started functioning from the 24th April, 1998 which was the date when the new Deputy. Commissioner assumed office.
Mamit is the least urbanised Districts of Mizoram with 17.25 % of Total Population i.e out of 86364 only 14,899 person is living in Urban areas.Against the State level Sex Ratio of 976,Mamit district comprises of 927 sex ratio which is the lowest among all eight District in the State.In terms of Literacy rate Mamit District is the second least Literacy Rate with 84.9 out of all Eight District of the State.West Phaileng village is the most populated Village with population of2,1,309 while Saitlaw with a population of Only 59 persons is the smallest village in the Disrict.Against a totol Population of 94.4 % Scheduled Tribes in the State , The Scheduled Tribes Population of Mamit is 95.0 % .
The Temperature ranges from 9C to 24C and from 24C to 36C during winter and summer respectively.The district experiences Monsoon during summer receiving abundant rainfall and is neither too hot nor too cold throughout the year.The district is bounded on the north by Hailakandi district of Assam state, on the west by North Tripura district of Tripurastate and Bangladesh, on the south by Lunglei district and on the east by Kolasib and Aizawl districts. The district occupies an area of 3025.75 km sq..It is 4th largest district in Mizoram and 395th largest in India in terms of total area.
All Rivers flow in South-North direction, except Khawthlangtuipui. The Mountains also streched in the same manner. The five main big rivers are Tlawng, Tut,Teirei, Langkaih and Khawthlangtuipui.
The economy of the District is basically Agro-based. Paddy which is the staple food of the populace is the main crop. Jhum type cultivation is the most popular type of cultivation and comprises the main source of agricultural products.
Major Crop: Soil is fertile and major crops production, which is paddy, in the district takes place during the Kharif season. In Rabbi season Mustard, Cabbage, Radish, Carrot, Tomato, Potato, Pulses are grown. The district is famous for Oranges and Hatkora fruits. The vegetation is an admixture of species which ranges from bamboos and canes to fuel woods and timber species. The major allied activity in the district is Animal Husbandry (piggery and Poultry)