Angul district; also known as Anugul, is one of the thirty districts of Odisha in eastern India. The city of Angul is the district headquarters of Angul district. Angul District, originally part of Undivided Dhenkanal, became separate on April 1, 1993, for administrative convenience. The name "Angul" of the district originates from its headquarters, Angul. According to L.S.S. O’Malley, the name is believed to be a transformation of "Anugol," with a legend attached. In the past, the region was inhabited by Khonds, Savaras, and Gonds, with Khonds being predominant. It was divided into principalities led by Khond chiefs, until the Odisha King established rule, aided by Rajputs and adventurers, over the Khonds who paid tribute. The last Khond chief, Anu, rebelled, and a conspiracy led to his deposition through a struggle called "gol." The conquerors commemorated their victory by naming the land "Anugol," which evolved into "Anugula" or "Anugol" in colloquial language. Angul is located in the centre of the state of Odisha and lies between the latitudes of 20°31′N and 21°40′N and longitudes of 84°15′E and 85°23′E. The altitude is between . The district has an area of . It is bounded by Dhenkanal and Cuttack district in the east, Deogarh, Kendujhar and Sundargarh district in north, Sambalpur and Sonepur in west and Boudh and Nayagarh in the south side. The district is abundant with natural resources. Angul, The district headquarters is about from the state capital Bhubaneswar. A study jointly conducted by Indian Institute of Technology, Delhi (IIT-D) and Central Pollution Control Board (CPCB) in 2010 revealed that Angul district is among the top ten most polluted Indian cities where the pollution level reached a "very alarming" level. The following is the list of blocks, tehsils and subdivisions in the district of Angul: Sub-division Angul Athmallik Talcher Pallahara Blocks Angul Sadar Athmallik Sadar Chhendipada Talcher Sadar Pallahada Sadar Banarpal Kishorenagar Kaniha Tehsils Angul Athmallik Talcher Pallahada Chendipada Banarpal Kishorenagar Kaniha According to the 2011 census, Angul district has a population of 1,273,821, ranking of 380th in India (out of a total of 640).