Nalbari is an administrative district in the state of Assam in India. The district headquarters are located at Nalbari.

Nalbari was declared a sub division of undivided Kamrup District in 1967. The district was created on 14 August 1985 when it was split from Kamrup district. 1 June 2004 saw the formation of from parts of three districts, including Nalbari.

Nalbari district occupies an area of 2,257 square kilometres (871 sq mi), comparatively equivalent to Indonesia’s Morotai Island.The latitude of Nalbari is 26 degrees north and 27 degrees north and the longitude is 91 degrees east and 97 degrees east. The tributaries of the Brahmaputra, the Nona, Buradia, Pagaldia, Borolia and Tihu, which originate in the foothills of the Himalayan Range, are wild in nature and make an enormous contribution to the agrarian economy of the district.

According to the 2011 census Nalbari district has a population of 769,919, roughly equal to the nation of Djibouti or the US state of Alaska. This gives it a ranking of 488th in India (out of a total of 640). The district has a population density of 763 inhabitants per square kilometre (1,980/sq mi) .Its population growth rate over the decade 2001-2011 was 11.74%. Nalbari has a sex ratio of 945 females for every 1000 males, and a literacy rate of 79.89%. Hindus 873,749 and Muslims 253,842.

The rate of total literacy of the Nalbari District, according to 2011 census, is 79.89% as against 80.95% in 2001. The rural literacy rate is 78.44%, while the urban rate is 91.46%. Male literacy is 85.58% consisting of Rural 84.38% and Urban 95.24%. Female literacy is 73.85% consisting of Rural 72.14% and Urban 87.48%. The total literacy rate of the state as a whole is 73.18%.

By road, Nalbari is on National Highway 31 in North and connected to “Hajo Doulashal Road” in South. The Nalbari railway station is within town center and Guwahati International Airport is at distance of 60 km.