Sivasagar is an important centre for tea and oil industries today.

[5] During the reign Gaurinath Singha (1780–1795) a battle was fought against the Moamoria rebels on the vicinity of the Sivasagar tank.

In the 2001 census, this figure for Sivasagar District was at 0.17 percent of Assam's population.

In the previous census of India 2001, Sivasagar recorded an increase of 44.2 percent to its population compared to 1991.

Subsequently on 1984, the court of Sub-Divisional Judicial Magistrate, Charaideo, Sonari was established.

The Sub-Divisional Judicial Magistrate Court(M), Nazira begin functioning from 24 July 2014.

District and Sessions Judge, Charaideo, Sonari begin functioning from the date of 09-02-2018.

State-run buses connect it to Guwahati, Dibrugarh, and Jorhat from the Assam State Transport Corporation's (ASTC) bus station in Sivasagar.

Cheaper modes of transport, like Tata Magic and Tempos, are available through Nazira, Mechagarh and Joysagar to Sivasagar.

Akhil Gogoi of Raijor Dol is the incumbent MLA from Sivasagar assembly constituency.