Chittagong Division officially Chattogram Division, is geographically the largest of the eight administrative divisions of Bangladesh. It covers the southeasternmost areas of the country, with a total area of 34,529.97 km and a population according to the 2022 census of 33,202,326, which makes it the second most populous division and the 45th most popul…Chittagong Division officially Chattogram Division, is geographically the largest of the eight administrative divisions of Bangladesh. It covers the southeasternmost areas of the country, with a total area of 34,529.97 km and a population according to the 2022 census of 33,202,326, which makes it the second most populous division and the 45th most populous subnational entity in the world — more populous than all but 43 other countries. The administrative division includes mainland Chittagong District, neighbouring districts and the Chittagong Hill Tracts.