Dhanbad is a city in the state of Jharkhand, and is also known as the Coal Capital of India. Dhanbad is the 96th fastest growing city in the world. According to the 2011 census, Dhanbad is among the 53 cities of India with a population of more than one million and is the 42nd largest city. Among the rail divisions of Indian Railway, Dhanbad Rail Division is the second largest in terms of revenue generation after Mumbai division.