The Ufa, Karchabarar, Saladia, Behala, Baradal and Basadubi beels are other notable bodies of water in Shantiganj, in addition to the Dekhar haor.
[4] On 26 July 2021, Khandker Anwarul Islam announced the renaming of South Sunamganj to "Shantiganj".
Shantiganj had a literacy rate (age 7 and over) of 32.30%, compared to the national average of 51.8%, and a sex ratio of 1021 females per 1000 males.
[4] The population is predominantly Muslim (90.3%) with a small minority of Hindus (9.7%) and very few following other religions.
Shantiganj Upazila is divided into eight union parishads: Dargapasha, Joykalash, Paschim Birgaon, Paschim Pagla, Patharia, Purba Birgoan, Purba Pagla, and Shimulbak.