Derai Upazila ( Sunamganj district) with an area of 420.93 sq km, is surrounded by Sunamganj Sadar and Jamalganj upazilas on the north,Sullah and Nabiganj upazilas on the south, Jagganathpur on the east, Khaliajuri, Sullah and Jamalganj upazilas on the west. 

Main rivers are Surma, Piyain, Kushiyara Dahuka. Noted depressions: Aival, Gangui, Menua, Tatua and Khulrin Beels. 

Derai (Town) The town is now a municipality with an area of 20.5 sq km and population 23098; male 52.29%, female 47.71%. It has 9 wards and 29 mahallas. Literacy rate among the town people is 39.4%. The town has one dakbungalow. 

Administration Derai upazila was established in 1982. It consists of 9 union parishads, 165 mouzas, 233 villages. Marks of War of Liberation Mass grave and slaughter place 1. 

Religious institutions Mosque 253, temple 15, tomb 6. 

Population 185284; male 51.38%, female 48.62%; Muslim 68.53%, Hindu 30.96%, Buddhist 0.11%, Christian 0.12%, ethnic nationals 0.18% and others 0.10%. 

Literacy and educational institutions Average literacy 25.15%; male 30.1%, female 20.2%. 

Educational institutions: college 2, high school 16, junior high school 2, primary school (government) 96, primary school (non-government) 24, satellite school 4, madrasa 7. Dirai High School (1915) is a notable institute. 

Cultural organisations Club 35, public library 1, cinema hall 2, theatre stage 1, jatra group 4, literary society 3, women organisation 2. 

Main occupations Agriculture 45.24%, agricultural labourer 31.11%, wage labourer 3.19%, commerce 5.20%, service 2.75%, fishing 3.89%, others 8.62% .

Land use Arable land 32061 hectares, cultivated 26061 hectares, uncultivated arable land 2913 hectares, barren land 3087 hectares; khas land 184.13 hectares; single crop 87.58%, double crop 12.42%; land under irrigation 14490 hectares. 

Land control Among the peasants, 9.07% are landless, 20.95% marginal, 38.03% small, 23.30% intermediate and 8.65% rich. 

Value of land The market value of first grade arable land is about Tk 3000 per 0.01 hectare. Main crops Boro, aush and aman paddy. Nearly extinct crop Jute. 

Main fruits Mango, jackfruit, banana, litchi, black berry, guava. 

Fisheries, dairies, poultries Fishery 150, hatchery 5, poultry 120. 

Communication Roads: pucca 4 km, mud road 408 km; waterways 46 nautical mile. 

Traditional transport Palanquin and horse carriage (extinct). Manufactories Flour mills 6, ice factory 3, auto rice-mill 10. 

Cottage industries Weaving 3, bamboo work 5, goldsmith 20, blacksmith 25, potteries 4, wood work 22, welding 15, tailoring 20. 

Hats, bazars and fairs Hats and bazars are 12, fairs 2. 

Main exports Fish. NGO activities Brac, HEED Bangladesh, Grameen Janakolyan Sangstha, RASA. 

Health centres Upazila health centre 1, health and family welfare centre 1, satellite clinic 2, BRAC operated TB Clinic and HID Bangladesh operated Leprosy Clinic.