Four of the six CD blocks in the district have coal mines – Patratu, Ramgarh, Mandu and Chitarpur.

Ramgarh district lies in the central part of the Chota Nagpur Plateau.

The far-off hills in the background in exquisite tints of blue or purple as the light falls, the nearer hills picturesquely shaped and luxuriant in every shade of green with their bold escarpments in black or grey, and the brown plains below furnishing their quota of colours.

According to the 2011 Census of India, Jai Nagar had a total population of 5,347, of which 2,806 (52%) were males and 2,541 (48%) were females.

The total number of literate persons in Jai Nagar was 4,544 (73.81% of the population over 6 years).