About Giridih
Giridih is 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. Before 1972, Giridih was part of Hazaribagh district.
Giridih is a centre of the prestigious Indian Statistical Institute (ISI). Giridih is also one of the six Data Processing Centres of Data Processing Division (DPD) of National Sample Survey Office (NSSO).
Source : Wikipedia