[5] According to the 2011 Census of India, Mandar CD block had a total population of 128,585, all of which were rural.

[3] 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).

[12] Languages of Mandar block (2011)[13] Jharkhand is one of the states affected by Maoist activities.

[14] "Areas of Tamar, Bundu, Sonahatu, Angarha, Sikidari Police Stations and Rahe O.P.

have been widely affected by activities of CPI (Maoist) group till the end of year 2009.

At the end of year 2010, The activities of CPI (Maoist) group has been minimized up to almost zero level.

"[15] According to the Jharkhand Police spokesperson and Inspector General (IG) Saket Singh, as reported on 8 December 2020, "The activities of CPI-Maoist are now confined to small pockets in the state because of our efforts."

[17] The arrest, from his home in Ranchi on 9 October 2020, by the NIA, of 83-years old Stan Swamy, Jesuit priest and activist, working with tribals for decades, and his subsequent death in custody, in a Mumbai hospital, on 5 July 2021, has been widely discussed.

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.

[31] National Highway 39 (Ranchi-Daltonganj), an important roadway in Ranchi district, passes through Mandar block.