Giridih is the headquarters of the Giridih district of Jharkhand state, India. The literal meaning of Giridih is the land of hills and hillocks - Giri, a Hindi word, means hills and dih, another word of the local dialect, indicates land of. Giridih houses the Giridih Coalfield which is one of the oldest coalfields to be worked in India. Before 1972, Giridih was part of Hazaribagh district. Giridih is one of the six Data Processing Centres of the Data Processing Division (DPD) of the National Sample Survey Office (NSSO).