Lakhimpur figures largely in the annals of Assam as the region where tribes from the east first reached the Brahmaputra.

[3] The area was later given by Ahoms to the Baro-Bhuyans to rule like feudal lords, as they had helped defeat the Chutiya and Kachari kingdoms.

The Burmese, who had ruined the native kingdoms, at the end of the 18th century, was in 1826 expelled by the British under the Treaty of Yandabo.

They placed the southern part of the state, together with Sivasagar under the rule of Purandar Singha; but it was not till 1838 that the whole was taken under direct British Administration.

[4] According to the 2011 census Lakhimpur district has a population of 1,042,137,[2] roughly equal to the nation of Cyprus[6] or the US state of Rhode Island.

Later, it was changed by the Baro-Bhuyans to Lakhimpur, when they were made feudal lords of the region by the Ahoms after defeating the Sutiya kings and was kept in memory of the land (in present-day Darrang district), which they lost to the Koch kingdom.

In the year 1996 Lakhimpur district became home to the Bardoibum-Beelmukh Wildlife Sanctuary, which has an area of 11 km2 (4.2 sq mi).

Lakhimpur district occupies an area of 2,277 square kilometres (879 sq mi),[15] comparatively equivalent to Indonesia's Yapen Island.

[16] Located in the North-East corner of the Indian State of Assam, the district of Lakhimpur lies on the North bank of the river Brahmaputra.

Some varieties are Hollokh (Terminalia myriocarpa), Ajhar (Lagerstroemia speciosa), Simolu (Bombax ceiba or Salmalia malabarica), Sum (Machilus), Gomari (Gmelina arborea), Sisu (Dalbergia sissoo), Silikha (Terminalia chebula), Neem (Azadirachta indica), Nahar (Mesua ferrea) etc.