Raina I (also spelled Rayna and called Rainagar) is a community development block that forms an administrative division in Bardhaman Sadar South subdivision of Purba Bardhaman district in the Indian state of West Bengal.

[6] The small Ratnela khal also originates in the region and later flows into the Ghia river in Hooghly district.

[8] As per the 2011 Census of India Raina I CD Block had a total population of 180,952, of which 173,094 were rural and 7,858 were urban.

[9] Large villages (with 4,000+ population) in Raina I CD Block are (2011 census figures in brackets): Rayna (5,157), Jotsadi (4,998), Bantir (5,176), Haripur (4,992), Shyamsundar (4,903) and Dharan (4,403).

[9] Other villages in Raina I CD Block include (2011census figures in brackets): Mugura (1,867), Palasan (3,917), Hijalgram (1,685), Narugram (3,226) and Natu (1,626).

[13] See also – List of West Bengal districts ranked by literacy rate Primary Census Abstract Data

In the 2011 census Hindus numbered 127,978 and formed 70.72% of the population in Raina I CD Block.

[4] Raina I CD Block is part of the area where agriculture dominates the scenario but the secondary and tertiary sectors have shown an increasing trend.

All 110 villages (100%) have telephones (including landlines, public call offices and mobile phones).

[19] In 2013-14, there were 115 fertiliser depots, 9 seed stores and 60 fair price shops in the CD Block.

[4] Persons engaged in agriculturein Raina I CD Block Although the Bargadari Act of 1950 recognised the rights of bargadars to a higher share of crops from the land that they tilled, it was not implemented fully.

Large tracts, beyond the prescribed limit of land ceiling, remained with the rich landlords.

In 2013-14, persons engaged in agriculture Raina I could be classified as follows: bargadars 6.47%, patta (document) holders 11.45%, small farmers (possessing land between 1 and 2 hectares) 8.29%, marginal farmers (possessing land up to 1 hectare) 25.00% and agricultural labourers 48.79%.

[4] Raina I CD Block has 8 ferry services and 8 originating/ terminating bus routes.

[31] More than 6,000 schools (in erstwhile Bardhaman district) serve cooked midday meal to more than 900,000 students.

[32] In 2014, Raina I CD Block had 1 block primary health centre, 3 primary health centres and 4 private nursing homes with total 51 beds and 6 doctors (excluding private bodies).

[33] Raina I CD Block is one of the areas of Bardhaman district which is affected by a low level of arsenic contamination of ground water.