Koderma district lies in the Chhotanagpur Plateau at 397 m (1,302 ft) above the sea level. The area exhibits undulating topography comprising hills, hillocks, plains and mounds. Northern part of the district is occupied by Koderma Reserve Forest. The highest peak is Debour Ghati (677 m) which is the boundary of Jharkhand and Bihar states. The section line from south to north from Jharkhand to Bihar passes through Hazaribag plateau. The rocks at the edge of this plateau have been cut deeply by innumerable streams. There are a number of rills and gullies of various type such as figure or shoe-lace gullies. Barakar River flows from west to east in the southern part of the district and supports Tilaiya Hydel project, a multipurpose dam constructed on it. Poanchkhara, Keso, Akto, Gurio, Gukhana Nadi are the main tributaries of the Barakar river. Sakri river is the main river in the northern part of the district which flows from south east to northwest. Ghggnna Naddi, Chhotanari Nadi are the tributaries of Sakri river. Mahua, Banyan, Sakhua, Palash, Peepal, Neem, Khajoor, Bamboo are the flora of the area. Fauna such as leopard, bear, pig, deer and hare are found in the forest area of Koderma Reserve forest. Koderma is surrounded by forests and many natural resources, Dhawajadhari Pahar (hill) that is dedicated to lord SHIVA and on the MAHASHIVRATRI many devotees get together to worship the GOD. Koderma district is richly endowed with natural resources. At one time, Koderma was considered as the mica capital of India. During that time, the townships of Koderma and Jhumri Tilaiya had seen the rise of several mica tycoons, including the houses of Goenkas,Bhadanis, Modi family including late Chottu Modi and Rajgarhias. Now, it is the fastest developing city in Jharkhand state. Koderma holds the world record in terms of holding largest deposits of Mica in the world.
As per 2011 Census of India, Kodarma Nagar Parishad had a total population of 24,633 of which 12,941 were males and 11,692 females. Scheduled Castes numbered 1,691 and Scheduled Tribes numbered 153.
As of 2001 India census, Kodarma had a population of 17,160. Males constitute 53% of the population and females 47%. Kodarma has an average literacy rate of 63%, higher than the national average of 59.5%: male literacy is 71%, and female literacy is 53%. In Kodarma, 17% of the population is under 6 years of age.
In the matter of education, Koderma has been thought a backward city but in recent times many people from this district have received national recognition as doctors, engineers and other professionals. Many renowned doctors, such as Dr JPN Barnwal, Dr Naresh Pandit, Dr Vikas Chandra, Dr S K Raj, Dr Arun Kumar, Dr Arun K Abodh, Dr HD Singh, Dr Akash Narayan, Dr Rajan Kumar, Dr Alok Narayan, Dr Sagarmani Seth, Dr Ranjeet Barnwal and others work for the people of Koderma. Other such names are Sanjay Shukla, SB Prasad, Vijay Kumar, Santosh Manav, Sanjeev Sameer.
There are a number of schools and degree colleges in Kodarma:Grizzly Vidyalaya, Telaiya Dam
Grizzly College of Education, Gumo
National Public Academy, Bypass Road
National Public Academy, Chitragupta Nagar
Saint Clare's School, Lokai, Koderma
Basuakala Iti, Jhumari Telaiya, Koderma
Jagannath Jain College, established in 1960 at Lakhi Baghi
Ram Govind Institute of Technology
Jharkhand Vidhi Mahavidyalaya
Koderma Industrial Training Centre, Koderma
Jeevan Jyoti School, Lakhi Baghi
Koderma High School, Koderm
Project Girls High School, Koderma
Adarsh Madhya Vidyalay, Telaiya
Kanya Madhya Vidyalay
Mahila Mahavidyalay, Koderma
St.Xavier's Academy, Chandwara
As per 2011 census the total number of literates in Kodarma Nagar Parishad was 16,645, out of which 9,647 were males and 6,998 were females.
Koderma is located along National Highway 31 that connects Ranchi and Patna and Koderma Giridih state highway.
Koderma railway station is on the Grand Chord railway line of East Central Railway connecting Calcutta and Delhi via Dhanbad. The railway station is actually located in adjacent Jhumri Tilaiya town and not in Koderma town which is some distance away (9 km).
Three new railway lines are being laid from Koderma railway station in three different directions:
- Koderma-Giridih 111 km long
- Koderma-Hazaribagh 79 km long (eventually to Ranchi railway junction, 200 km from Koderma via Barkakana Junction)
- Koderma-Tilaiya (Bihar)
The 85 km long railway line from Koderma to Kawar towards Giridih has been commissioned in August 2015 and a DMU passenger train has started running on this 86 km section. This has made Koderma a grand railway junction.
The railway line to Hazaribagh has been laid.It has started from 20 February, 2015 onwards. One Passenger Train is running Hazaribagh Town to Koderma Station.Sadar Hospital,Koderma
Jay Prakash Hospital ,Jhumri Telaiya, Koderma
Hope Hospital ,Jhumri Telaiya, koderma
Kodarma has over 18 banks with branches in the district. Some of the banks are State Bank of India, Bank of India, HDFC Bank, ICICI Bank, IDBI Bank, Axis Bank and Allahabad Bank.