Asansol is the second largest city in West Bengal after Kolkata and the 35th largest urban agglomeration in India. Asansol is located in the Burdwan District of West Bengal in India. According to a 2010 report released by the International Institute for Environment and Development, a UK-based policy research non-governmental body, Asansol is ranked 11th among Indian cities. and 42nd in the world in its list of 100 fastest-growing cities.