Tinsukia is one of the main Assamese speaking cities functioning as the administrative head of the Tinsukia district. Located at an altitude of 380 ft, this city has a population of about 1,20,000 . Prior to 1989, it was a part of Dibrugarh district after which it was carved out into a new district. As per the 2011 census, total population of the district is 1.3 million out of which 42 percent is the total working age population. 35 percent is working in the agriculture sector and about 62 percent participate in other services and industrial sectors such as trade & commerce, manufacturing, transportation, tea production, wood work, retail of garments, electronics etc. Prominent crops grown here include tea, oranges, ginger, paddy and citrus fruits. The British first discovered the tea plant growing wild in Sadiya and the first tea plantation was started in 1823 at Chabua, near Tinsukia.