Ormanjhi block is one of the administrative CD blocks in the Ranchi Sadar subdivision of Ranchi district in the Indian state of Jharkhand. Geography Ormanjhi is located at . Ormanjhi CD block is located on the Ranchi plateau proper. It has an average elevation of above mean sea level and the land is undulating. Getalsud Dam across the Subarnarekha is in Ormanjhi block. Ormanjhi CD block is bounded by the Patratu and Ramgarh CD blocks in Ramgarh district on the north, Angara CD block on the east, Kanke CD block on the south and on the west. Ormanjhi CD block has an area of 227.97 km2. Ormanjhi and Sikidiri police stations serve Ormanjhi CD block. The headquarters of Ormanjhi CD block is located at Ormanjhi village. Demographics Population 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. There were 48,416 (51%) males and 45,721 (49%) females. Population in the age range 0–6 years was 14,448. Scheduled Castes numbered 3,974 (4.22%) and Scheduled Tribes numbered 33,734 (35.84%). The percentage of Scheduled Tribes in Ranchi district, in 2011, was 47.67% of the population (rural) in the blocks. The percentage of Scheduled Tribes, numbering 1,042,016, in the total population of Ranchi district numbering 2,914,253 in 2011, was 35.76%. The Oraons forming 18.20% of the population and the Mundas forming 10.30% of the population, were the main tribes. Other tribes included (percentage of population in brackets) Lohra (2.46), Bedia (1.32) and Mahli (1.09). The only census town in Ormanjhi CD block is (2011 population figure in brackets): Irba (5,210). Large villages (with 4,000+ population) in Ormanjhi CD block are (2011 census figures in brackets): Ormanjhi (3,956). Literacy census, the total number of literate persons in Ormanjhi CD block was 53,812 (67.53% of the population over 6 years) out of which males numbered 32,061 (78.17% of the male population over 6 years) and females numbered 21,751 (56.24% of the female population over 6 years). The gender disparity (the difference between female and male literacy rates) was 21.93%. census, literacy in Ranchi district was 77.13%. Literacy in Jharkhand was 67.63% in 2011. Literacy in India in 2011 was 74.04%. See also – List of Jharkhand districts ranked by literacy rate Language and religion Hindi is the official language in Jharkhand and Urdu has been declared as an additional official language.