Morigaon district is an administrative district in the state of Assam in India. The district headquarters are located at Morigaon. The district occupies an area of 1,550 km² and has a population of 957,853 (as of 2011) of which males and females are 485,328 and 472,525 respectively.
The ancient place of occult Mayang is located in this district as well as Pobitora Wildlife Sanctuary.
The history of Morigaon is obscure. One famous traditional ruler of the region was Arimatta whose history is shrouded in mystery. After Arimattas’s death, Jongalbalahu, his son ruled over the region. Jongalbalahu was ultimately killed by the Kacharis with a bamboo spear near Kajalimukh.
The legend further goes on to say that Jongalbalahu to escape his pursuers, submerged himself in Kollong river and emerge at Raha to quench his thirst and again dived here to emerge at Jagi. From this incident were derived the names of present day Raha and Jagi.
The writing of Bhimsingh throws some light on the history of present Morigaon town and its adjoining areas. This region was ruled independently by six rulers. During this time two princes from Darrang, Supradhvaj and Makardhvaj, fled from their homeland due to internal clash, by crossing the mighty Brahmaputra and they settled at Bahakajari. Later on, Supradhvaj married the daughter of Mangalsingh, the King of Baghara. Supradhvaj was then made the seventh king of the region, having an independent kingdom of his own.
During the days of Lachit Borphukan, another two princes from Darrang, Ram Singh and Bhimsingh crossed the Brahmaputra in search of plain lands. After Bhim Singh settled down, meanwhile, Ram Singh left for his home. Bhim Singh was not liked by the local people, hence, he left Brahmaputra and settled down near Mori Beel. This place came to known as Morigaon.
Morigaon became a fully-fledged district on 29 September 1989, when it was split from Nagaon district.
Morigaon district occupies an area of 1,704 square kilometres (658 sq mi),comparatively equivalent to Samoa’s Savai’i.The district is bounded by the mighty Brahmaputra on the North, Karbi Anglong district on the South, Nagaon District on the East and Kamrup District on the West. The greater part of the district is an alluvial plain, criss-crossed with numerous rivers and water ways and dotted with many beels and marshes. The mighty Brahmaputra flows along with the northern boundary of the district.
Killing, Kolong and Kopili rivers flow through the southern part of the district. The Killing meets the Kopili at the Matiparbat where from Kopili moves westward. The Kolong joins Kopili at the Jagi Dui Khuti Mukh and from here they jointly fall into the Brahmaputra. The general appearance of the district is extremely picturesque. On a clear day in the winter the view to the north is bounded by the blue ranges of the outer Himalayas, behind which snowy peaks glisten brightly in the sun, while to the west and the south of the district lie range upon range of lower hills, whose sides are covered with luxuriant vegetation of the tropical forest.
In 2006 the Indian government named Morigaon one of the country’s 250 most backward districts (out of a total of 640).It is one of the eleven districts in Assam currently receiving funds from the Backward Regions Grant Fund Programme (BRGF).
There are three Assam Legislative Assembly constituencies in this district: Jagiroad, Morigaon, and Laharighat.Jagiroad is designated for scheduled castes. All three are in the Nowgong Lok Sabha constituency