Mahabubnagar is the largest district in Telangana in terms of area (18432.00 sq. km) covered. It is also known as Palamoor. The name was changed to Mahabubnagar in honour of Mir Mahbub Ali Khan Asaf Jah VI, the Nizam of Hyderabad (1869-1911 AD). The district was situated between 77° 15′ and 79° 15’E, of the eastern longitudes and 15° 55′ and 17° 20’N, of northern latitudes.
Mahabubnagar is southern district of Hyderabad state under Nizam and bordered with River Krishna in the south and surrounded by the Guntur District of AP to the east, Kurnool district of AP to the south, Nalgonda and Ranga Reddy Districts to the north and Gulbarga and Raichur Districts of the state of Karnataka to the West.
Mahabubnagar district population is 40,53,028 as per the 2011 census which accounts for 11.52% of the total population of the State with 15.34% decadal growth.
The most interesting place to see in Mahabubnagar is the famous banyan tree called Pillalamrri, which is about 4 km from the town. There is a tomb of a Muslim saint under the tree.
The tree presents the appearance of a small hillock with green foliage from a distance but on reaching closer, it looks like a large green umbrella under which about thousand people can easily take shelter.
It is 700 year old banyan tree and its branches extend over an area of 3 acres. In Telugu, “Pillalu” means children & “marri” means a banyan tree. There is also an aquarium, a small zoo and an archaeological museum here