Sonarpur is a community development block that forms an administrative division in Baruipur subdivision of South 24 Parganas district in the Indian state of West Bengal.

As the sea receded southwards, in the sub-recent geological period, a large low-lying plain got exposed.

The periodical collapse of both the natural Levees and man-made embankments speed up the process of filling up of the depressions containing brackish water wetlands.

[7] Gram panchayats of Sonarpur CD block/panchayat samiti are: Banhooghly-I, Banhooghly-II, Kalikapur-I, Kalikapur-II, Kamrabad, Kheyadaha-I, Kheyadaha-II, Langalberia, Poleghat, Pratapnagar and Sonarpur-II.

[9] Large villages (with 4,000+ population) in the Sonarpur CD block (2011 census figures in brackets): Atghara (4,284), Ranabhutia (4,196), Bhagabanpur (11,177), Tardaha (4,706), Khurigochhi (6,023), Mali Puuria (5,858), Bhabanipur (4,007), Mathurapur (4,460), Joykrishnapur Chairi (6,436), Banhugli (11,103), Baruli (4,152) and Raypur (4,098).

[9] Other villages in the Sonarpur CD block include (2011 census figures in brackets): Paighat (2,360), Pratapnagar (2,785) and Langalber (2,058).

[14] In the 2001 Census of India, the Sonarpur CD block had a total literacy of 70.74% for the 6+ age group.

[15] In the 2011 Census of India, Hindus numbered 179,174 and formed 81.49% of the population in the Sonarpur CD block.

[17] As per the Human Development Report for the South 24 Parganas district, published in 2009, in the Sonarpur CD block the percentage of households below poverty line was 23.36%, a moderate level of poverty, second highest in the north-west portion of the district after the Budge Budge II CD block.

[20] The District Human Development Report points out that in the blocks of the region situated in the close proximity of the Kolkata metropolis, overwhelming majority are involved in the non-agricultural sector for their livelihood.

It includes factory, mining, plantation, transport and office workers, those engaged in business and commerce, teachers, entertainment artistes and so on.

[22] There are 65 inhabited villages in the Sonarpur CD block, as per the District Census Handbook, South Twenty-four Parganas, 2011.

[23] The South 24 Parganas had played a significant role in the Tebhaga movement launched by the Communist Party of India in 1946.

[26] In 2013–14, there were 42 fertiliser depots, 8 seed stores and 87 fair price shops in the Sonarpur CD block.

[27] In 2013–14, the Sonarpur CD block produced 1,343 tonnes of Aman paddy, the main winter crop from 1,763 hectares.

[27] In the Sonarpur CD block, in 2013–14, net area under effective pisciculture was 1,432 hectares, engaging 10,280 persons in the profession, and with an approximate annual production of 41,300 quintals.

[27] Garia, Narendrapur, Sonarpur Junction, Subhashgram, Bidyadharpur and Kalikapur are stations on the Sealdah South section.

Rajpur-Sonarpur municipal area (outside the CD block) had 2 general degree colleges with 3,171 students.

[34] Certain areas of the South 24 Parganas district have been identified where ground water is affected by Arsenic Contamination.

[35] High levels of arsenic in ground water were found in twelve CD blocks of the district.

Water samples collected from tubewells in the affected places contained arsenic above the normal level (10 micrograms per litre as specified by the World Health Organization).