Jhumri Telaiya (also spelled as Jhumri Tilaiya) is a city in the Koderma subdivision of the Koderma District of Jharkhand, India.

Jhumri is the name of the original village in the area, which is now located in the city. The word “Telaiya” is the Hindi language word for a small lake (the Tilaiya Dam reservoir). Jhumari is also said to be a local folk dance.

Koderma railway station in Jhumri Telaiya is on the Grand Chord railway line of East Central Railway connecting Calcutta and Delhi via Dhanbad. Through it, the town is well connected to several of the major Indian cities including Delhi, Kolkata, Mumbai, Ujjain, Ahmedabad, Indore, Harda, Bhopal, Lucknow, Varanasi, Ranchi and Bhubaneswar.

Three new railway lines are being laid from Koderma railway station in three different directions: 1.Koderma-Giridih 102 km long 2.Koderma-Hazaribagh 79 km long (eventually to Barkakana railway junction, 133 km from Koderma) 3.Koderma-Telaiya (JHARKHAND) The 35 km long railway line from Koderma to Nawadih towards Giridih has been commissioned in June 2013 and a passenger train has started running on this small section. This has made Koderma a railway junction. The railway line to Hazaribagh has been laid. Train service was started from 31 January 2014. Train runs two times a day from Koderma railway station to Hazaribagh.

Buses, jeeps, and three-wheelers connect Jhumri Telaiya with nearby towns and villages. The town is accessible via the National highway 31, which is popularly known as Ranchi-Patna Road. It is located 23 km from the Grand Trunk Road.

The nearest airport is Ranchi (162 km), the capital of the Jharkhand state. Patna, the capital of Bihar state, is situated 175 km away from the town.

Although the mica mining activity has declined, Jhumri Telaiya still remains an important mica center in the Koderma-Hazaribagh Industrial Area, according to a 2008 IBEF report. Telaiya has become incubator for small scale industries because of its proximity to easy access to minerals, good road-rail connectivity and good power infrastructure (due to the Damodar Valley Corporation sub station).

The region is a Ranchi Industrial Area Development Authority (RIADA) industrial area, which has hand pump and mica powder manufacturing units. Telaiya has numerous sponge iron plants and mica units. The Telaiya Ultra Mega Power Project (UMPP) is an upcoming coal-based power in the Hazaribagh district, not far away from Jhumri Telaiya. The Koderma Thermal Power station at Banjhedih is another power plant in the area.

On the banking sector, many national and private banks are available including State Bank of India, Union Bank of India, Bank of Baroda, Bank of India, United Bank of India, Allahabad Bank, ICICI Bank, HDFC Bank etc. along with their ATMs.