Tinsukia The Tinsukia Sub-Division of un-divided Dibrugarh District was declared as the 23rd District of Assam on 1st October'1989. It consists of three sub-division viz Tinsukia(Sadar), Margherita and Sadiya.

Though , Tinsukia is an industrial district, yet it produces a sizeable amount of Tea,Oranges,Ginger, Citrus fruits and Paddy. Majority of its population are cultivators and agricultural workers. The Oldest oil refinary in India is situated at Digboi in this District and Margherita and Ledo is famous for open cast coal mining. The Dibru-Saikhowa National Park is also situated in this District which is famous for its exteremly rare and endangered species of wild life.

HISTORY

The ancient name of Tinsukia was Bangmara which was orginally known as Changmai Pathar. It was the capital of Muttack Kingdom. The Bangmara city was built by King Sarbananda Singha with the help of his Minister Gopinath Barbaruah alies Godha. The city was built in the middle of the present Tinsukia City (near the Senairam H.S. School).

As per the direction of Sarbananda Singha, Godha Baruah dug a triangler shaped pond in Bangmara which is known as "Tinikunia Pukhuri". In 1884 Dibru-Sadiya Rail line was constructed and a station was setup near the "Tinikunia Phukhuri" which was named as Tinsukia. Since then the City was popularly known as Tinsukia.

The muttack Kingdom occupied a distinct place in the history of Assam during the later part of the 18th century and the early part of 19th century. The Moamareeyas or the Muttacks turned the history of the mighty Ahom Kingdom by leading the historic Moamareeya Rebellion, which may be described as the first socio-political movement in the history of Assam.

According to the map prepared by Captain Hemilton Vetch in 1841, a large portion of present Dibrugarh and Tinsukia district had been identified as "Bengmara Country of Moamareeya Tribe" with its capital at Bengmara (present Tinsukia). In the history of Assam, this Bengmara Country was later popularly known as Muttack Country of Soumar, early name of a region in the North East corner of Assam.

The First King of Muttack Kingdom was Swargadeo Sarbananda Singha. Sarbananada Singha established his capital at Rangagarah situated in the bank of river Guijan. In 1791 A.D. he transferred his capital to Bengmara.

Several tanks were dug in the days of Sarbananda Singha viz.,Chauldhuwa Pukhuri,Kadamoni pukhuri,Da Dharua Pukhuri, Mahdhuwa Pukhuri, Bator pukhuri,Logoni Pukhuri, Na-Pukhuri,Devi Pukhuri,Kumbhi Pukhuri,Rupahi Pukhuri etc. Apart from the these ponds there are many ancient roads constructed in different parts of the Muttack territory. Godha-Borbaruah road, Rangagarah road, Rajgor road and Hatiali road were main roads within the territory.