Tinsukia is the site of Bangmara, which was originally known as Changmai Pathar. It was the capital city of the Muttack Kingdom which was fouded by Swargadeo Sarbananda Singha.
Swargadeo Sarbananda Singha was known as Mezara, who rose to become an able administrator. Mezara adopted the name Sarbananda Singha after become the King. Swargadeo Sarbananda Singha introduced coins after his name and in Saka 1716 and 1717, he inscribed the title Swargadeo in the coins.
As instructed by Swargadeo Sarbananda Singha, his Minister Gopinath Barbaruah alies Godha dug a pond in triangular shaped which is known as Tinikunia Pukhuri. In 1884 a station was constructed near this pond, when the Dibru-Sadiya Rail line was laid, which was named as Tinsukia. Ever since then the City was popularly known as Tinsukia
