This is a list of administrative sub-districts the state of Assam
The administrative entities that are a level below of Districts are named as Sub-districts (officially Co-district) in Assam. Since India's independence in 1947, the administrative entities of Assam have increased over a period of time. With 54 subdivisions initially, the Government of Assam incorporated 24 more sub-districts[1][2] with 5 new districts[3] on 26 January 2016,[4] increasing the count to 78. Where the subdivisions are the administrative units, the terms, such as Tehsils or Mandals represent revenue collecting units under a district administration, and both are treated as sub–districts. Assam has 155 Tehsils, and a few fall under multiple districts, specially the districts in BTC and its surrounding. In present the total number of subdivisions are 78.
The oldest recognised and constantly inhabited urban centres based on the earliest years of formation of the civic bodies, constituted before the Indian independence of 1947.
Notes
^1 Formation of Silchar municipal region, 1922.[5]