This district of Bokaro was created on 1st April, 1991 by taking out Chas and Chandankiyari C.D.Blocks of Dhanbad district and the entire Bermo Subdivision of Giridih district and then merging them to form a new district. Bokaro district is bounded on the east by Dhanbad district and some portion of West Bengal State, on the west by Ramgarh district, on the south by Purulia district of West Bengal and on the north by parts of Giridih, Hazaribag and Dhanbad districts. The district extends between 23026” to 23057” North Latitude and 85034” to 86026” East Latitude.