Dhanbad is a city in the Indian state of Jharkhand, India. It is the second most populated city in Jharkhand. Dhanbad along with its urban areas population ranks 42nd in population amongst other cities in India.

Dhanbad is famous for its coal mining, has some of the largest mines in India and is called Coal Capital of India Tata Steel, Bharat Coking Coal Limited (BCCL), Eastern Coalfields Limited (ECL) and Indian Iron And Steel Company (IISCO) are some of the companies who operate coal mines in the district. The Indian School of Mines (ISM) is located in Dhanbad.

Among the rail divisions of Indian Railway, Dhanbad Rail Division is the second largest in terms of revenue generation after the Mumbai division.

The city has one parliamentary seat and six seats in the Legislative Assembly.

The Dhanbad originated from the district of Manbhum occupied by Mundari or Kolarian races in the wilderness of South undivided Bihar. In the seventh century A.D. some information is available from the account of the travels of Hieun Tsang. These accounts narrate existence of a powerful kingdom which comprised the district and adjoining areas, ruled by Sasanka.

Manbhum was one of the districts of the East India during the British Raj. After India’s independence, the district became a part of Bihar state, and upon re-organization of the Indian states in the mid-1950s, the district became a part of the West Bengal. Present Purulia district was carved out of the district of Manbhum.

Manbhum region has thick forests, with good mineral resources, and has a mixed demographic profile with people from different religious and social groups, including adivasis, particularly the Santals and the Mundas.

Dhanbad has an average elevation of 227 m (745 ft). Its geographical length (extending from north to south) is 15 miles (24 km) and the breadth (stretching across east to West) is 10 miles (16 km). It shares its boundaries with West Bengal in the eastern and southern part, Dumka and Giridih in the North and Bokaro in the west. Dhanbad comes under the Chota Nagpur Plateau.

Dhanbad features climate that is transitional between a humid subtropical climate and a tropical wet and dry climate. Summer starts from last week of March and ends in mid-June. Peak temperature in summer can reach 48 °C. Dhanbad also receives heavy rainfall. In winter, the minimum temperature remains around 10 °C with a maximum of 22 °C. Damodar River is the main river flowing through the district. Katri, Jamunia, Gobai, Khudia and Irji are the other rivers flowing through the district.

The present district used to be a part of Manbhum. In the Settlement Report for Manbhum (1928) it was stated that no rock inscriptions, copper plates or old coins were discovered and not a single document of copper plate or palm leaf was found, during the Survey and Settlement operations. The oldest authentic documents produced were all on paper and barely even a hundred years old. Dhanbad was in Manbhum district from 1928 up to 1956. However, on 24 October 1956, Dhanbad was declared a District on the Recommendation of the States Reorganisation Commission vide notification 1911. This was done under the strong commitment and leadership from a renowned journalist Mr. Satish Chandra. In the year 2006, Dhanbad celebrated 50 years of being an independent District.[citation needed] From 1956 to 14 November 2000 it was under Bihar. At present it is in Jharkhand, after the creation of state on 15 November 2000.

Dhanbad Rail Division comes under East Central Railway zone. Grand Chord rail-line passes through Dhanbad junction, it connects Howrah and New Delhi. CIC rail line starts from Dhanbad and ends at Singrauli in Madhya Pradesh. There is one more rail line passing through the district, it starts at Kharagpur and ends at Gomoh, this rail line comes under South Eastern Railway. Dhanbad is connected with almost all states through rail network.

National Highway 2 and National Highway 32 are the major highways passing through Dhanbad. NH 2 is part of Golden Quadrilateral (GQ) highway network; Dhanbad lies in Kolkata-Delhi link of the Golden Quadrilateral network. NH2 is being converted into six lane expressway; NH 32 connects Dhanbad to Bokaro, Purulia and Jamshedpur. Private and State buses are available for inter-city traveling