Koderma district is one of the twenty-four districts of Jharkhand state, India, and Koderma is the administrative headquarters of this district.
Koderma district was created on 10 April 1994, after being carved out of the original Hazaribagh district. It is currently a part of the Red Corridor.
Koderma is surrounded by forests. The main rivers of the district are Barakar, Barsoi and Sakri. Dhawajadhari Pahar is a hill dedicated to lord Shiva, where at Mahashivratri many devotees assemble to worship the god. Koderma district is richly endowed with natural resources. Quartz, feldspar, asbestos, blue stone, white stone and moon stone are the minerals found here. At one time, Koderma was considered as the mica capital of India.
Koderma district consists of six Blocks. The following are the list of the Blocks in Koderma district:
Koderma Block, Jainagar Block, Chandwara Block, Markachho Block, Domchanch Block and Satgawan Block
The Vidhan Sabha constituency of this district are Kodarma, Barkatha and Barhi, which are part of Koderma and Hazaribag Lok Sabha constituency respectively.