On 15 August 2015, five new districts were formed in Assam, taking the total number of districts from 27 to 32. The five new districts are Biswanath (carved out of Sonitpur), Charaideo (of Sivasagar), Hojai (of Nagaon(英语:Nagaon district)), South Salmara-Mankachar (of Dhubri) and West Karbi Anglong (of Karbi Anglong). Hence these districts did not exist during census 2011.