Dhemaji district is an administrative district in the state of Assam in India. The district headquarters are located in Dhemaji and commercial headquarters are located in Silapathar. Dhemaji covers an area of 3,237 km² and has a population of 686,133. The predominant religion is Hinduism, with Hindus comprising approximately 95.47% of the popul…Dhemaji district is an administrative district in the state of Assam in India. The district headquarters are located in Dhemaji and commercial headquarters are located in Silapathar. Dhemaji covers an area of 3,237 km² and has a population of 686,133. The predominant religion is Hinduism, with Hindus comprising approximately 95.47% of the population.