Ormanjhi CD block is located on the Ranchi plateau proper.

It has an average elevation of 2,140 feet (650 m) above mean sea level and the land is undulating.

[7] According to the 2011 Census of India, Ormanjhi CD block had a total population of 94,137, of which 88,927 were rural and 5,210 were urban.

[5] The percentage of Scheduled Tribes in Ranchi district, in 2011, was 47.67% of the population (rural) in the blocks.

Other tribes included (percentage of population in brackets) Lohra (2.46), Bedia (1.32) and Mahli (1.09).

[9] The only census town in Ormanjhi CD block is (2011 population figure in brackets): Irba (5,210).

The gender disparity (the difference between female and male literacy rates) was 21.93%.

[14] Languages of Ormanjhi block (2011)[15] 60-70% of the population of Ranchi district were in the BPL category in 2004–2005.

The hill streams remain almost dry, except in the rainy season, and does not offer much scope for irrigation.

The fund, created by the Government of India, is designed to redress regional imbalances in development.

[23][24] National Highway 20 (earlier NH 33) (Ranchi-Ramgarh-Hazaribagh Road), an important roadway in Ranchi district, passes through Ormanjhi.