Nawalsahi is located at 24°25′52″N 85°46′22″E / 24.431056°N 85.772722°E / 24.431056; 85.772722 Koderma district is plateau territory and around 60% of the total area is covered with forests.

The first dam of the Damodar Valley Corporation, at Tilaiya, was built across the Barakar River and inaugurated in 1953.

[1][2][3] Note: The map alongside presents some of the notable locations in the district.

According to the 2011 Census of India, Nawalsahi had a total population of 1,167, of which 597 (51%) were males and 570 (49%) were females.

[4] Nawalsahi police station serves Domchanch CD block.