Mahakuma in the context of Kurigram District

Tangail District (Bengali: টাঙ্গাইল জেলা, romanized: Ṭāṅgāil Jēlā) is a district (zila) in the central region of Bangladesh. On 1 December 1969, Tangail mahakuma was separated from the Mymensingh district, and a district of the same name as the mahakuma's was created. The district consists of 237 square kilometers of the prior mahakuma and 3,177 square kilometers of land acquired from Mymensingh district. It is the largest district of Dhaka Division by area and second largest by population (after Dhaka district). The population of Tangail zila is about 4 million and its area is 3,414.28 square kilometres (1,318.26 sq mi). The main city of the district is Tangail. It is surrounded by Jamalpur District on the north, Dhaka and Manikganj Districts on the south, Mymensingh and Gazipur on the east, and Sirajganj on the west.

Kishoreganj District (Bengali: কিশোরগঞ্জ জেলা) is a district in Dhaka Division, Bangladesh. Earlier it was a mahakuma (sub-division) under Mymensingh district. 2495.07 km of land was taken from Mymensingh district to form Kishoreganj District. Kishorganj consists of eight municipalities, 13 upazilas, 105 union parishads, 39 wards, 145 mahallas, 946 mouzas, and 1775 villages.

Kolkata district (formerly known as Calcutta district) is a district in the Indian state of West Bengal. It only contains the entire city proper of Kolkata, the capital city of the state and therefore it is a city district. It is the smallest district in the state and also the most densely populated district. Being a city district, the district itself is its own headquarters; it does not have further subdivisions like mahakumas or blocks that exist in all other districts of the state nor does it have a district magistrate.