The eastern part of the district is a flat plain area with small towns, many in clusters and the western part, located on the east bank of the Hooghly River, is covered by the Kulpi-Diamond Harbour Plain, which is 5–6 metres above sea level.

Archaeological excavations at Deulpota and Harinarayanpur, on the bank of the Hooghly River indicate the existence of human habitation more than 2,000 years ago.

The census towns are: Ajodhyanagar, Sirakol, Uttar Bishnupur, Ghola Noapara, Usthi, Barijpur, Uttar Kusum, Kalikapota, Bamna, Dhamua, Shyampur, Nainan, Uttar Kalas, Dihi Kalas, Swangrampur, Bilandapur, Magrahat, Chandpur (M), Bangsidharpur (M), Purba Bishnupur, Berandari Bagaria, Dhola, Hasimnagar, Baneshwarpur, Chandpala Anantapathpur, Fatepur, Masat, Sangrampur, Mohanpur, Durganagar, Patdaha, Krishna Chandrapur, Mathurapur, Purba Ranaghat, Lalpur,[6][7][8][9] Police stations in Diamond Harbour subdivision have the following features and jurisdiction:[6][10] Community development blocks in Diamond Harbour subdivision are:[6][11][12] The subdivision contains 99 gram panchayats under 9 community development blocks:[13][14] An overview of the only municipal town in Diamond Harbour subdivision is given below:[6][11] South 24 Parganas district had a literacy rate of 77.51% as per the provisional figures of the census of India 2011.

* Does not include data for portions of South 24 Parganas district functioning under Kolkata Municipal Corporation The following institutions are located in Diamond Harbour subdivision: The table below (all data in numbers) presents an overview of the medical facilities available and patients treated in the hospitals, health centres and sub-centres in 2014 in South 24 Parganas district.

Medical facilities in Diamond Harbour subdivision are as follows: Hospitals: (Name, location, beds)[29] Rural Hospitals: (Name, CD block, location, beds) [30] Block Primary Health Centres: (Name, CD block, location, beds)[31] Primary Health Centres: (CD block-wise)(CD block, PHC location, beds)[32] Lok Sabha (parliamentary) and Vidhan Sabha (state assembly) constituencies in Diamond Harbour subdivision were as follows:[33]