Janjgir is the headquarters of the Janjgir–Champa district in Chhattisgarh, India. It has been the district headquarters since 1997, when Janjgir–Champa was carved out of Bilaspur. Well known for its Vishnu Temple, Janjgir is undergoing rapid industrial development and will become home to various thermal power plants in the coming years . After several attempts made by the people to adopt the name Janjgir, the railway station name changed from Naila to Janjgir-Naila. Janjgir is well connected by railways and roads and is connected to major cities like Bilaspur and Raipur through National Highway 200.
Every year the city organises "Jajwalya Dev Lok Mahotsav", a cultural programme devoted to King Jajwalya, who ruled the city in ancient times.
Places of interest in Janjgir include the deserted ruins of the residence of Miss A. C. Funk, a Christian missionary who lost her life aboard the Titanic and the Nahariya Baba Temple, a temple dedicated to Hanuman.
As of 2001 India census, Janjgir had a population of 32,495. Males constitute 52% of the population and females 48%. Janjgir has an average literacy rate of 70%, higher than the national average of 59.5%: male literacy is 59%, and female literacy is 60%. In Janjgir, 14% of the population is under 6 years of age.
Janjgir is a Lok Sabha parliamentary constituency in Chhattisgarh, India.
Janjgir-Champa Lok Sabha constituency is reserved for Scheduled Castes (SC) candidates. It is composed of the following assembly segments: