Tinsukia District is in Upper Assam and bounded by - in East-South by Arunachal Pradesh, In the South-west by Dibrugarh District and in North by Dhemaji District which is separated from Tinsukia District by the mighty river Brahmaputra.

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.

Tinsukia is well connected by air, National Highway and railway. It is only 532 KM by road from the State Capital Dispur, Assam. The nearest Airport is at Mohanbari,Dibrugarh which is about 40 Km from Tinsukia with daily connection from Delhi/Guwahati and with Calcutta four times in a week.

The district of Tinsukia is rich in Sericulture and Handloom activities particularly amongst the Tribal community such as Phakyal, Tangsa, Jemi Naga, Karbi etc. The Traditional dress of the people are unique in nature. The "Golden Thread" Muga culture is very much popular in this district. To encourage the people to increase the production of Muga Yarn and fabricss, the Department of Handloom and Textile along with the Sericulture Deptt.

The Major towns in Tinsukia District are
Tinsukia Digboi Margherita Doomdooma Makum