Kodarma District covers an area of 1,311 sq km and lies at a height of 400 m above sea level. It is bounded by Nawada District of Bihar in the north, Gaya District of Bihar in the west,
Giridih in the east and
Hazaribagh in the south. It is famous for Mica-deposits. Kodarma Reserve Forest occupies the northern part.
Barakar and Sakri rivers flow through Kodarma. Paddy, maize and pulses are the chif crops. Important tourist places are
Tilaiya Dam, Dhwajadhari Hill (Pahari), Satgawan Petro Falls and
Makamaro Hills.