Chainpur is located at 23°08′08″N 84°14′21″E / 23.1356°N 84.2393°E / 23.1356; 84.2393 The map alongside presents a rugged area, consisting partly of flat-topped hills called pat and partly of an undulating plateau, in the south-western portion of Chota Nagpur Plateau.

Three major rivers – the Sankh, South Koel and North Karo - along with their numerous tributaries, drain the area.

[4] According to the 2011 Census of India, Chainpur had a total population of 6,507, of which 3,300 (51%) were males and 3,207 (49%) were females.

[8] Lutheran High School Chainpur is a Hindi-medium coeducational institution established in 1947.

The school has a playground, a library with 2,595 books and has 2 computers for teaching and learning purposes.

The school has a playground, a library with 500 books and has 10 computers for teaching and learning purposes.