Sonitpur district
Darrang was converted into a district and Mangaldai was made the district Headquarter in 1833. But due to various reasons the British shifted the head quarter to Tezpur in 1835. The district comprised of two sub-divisions, Tezpur sadar sub-division and Mangaldoi sub-division with head quarter at Mangaldoi. The District of Darrang was divided in to six Revenue Circles under one Sub-Deputy Collector in each Circle. There was one Transferred area in the district at Charduar. An Asst. Political Officer was posted at Charduar under the Deputy Commissioner who acted as Political Officer.