Gaffargaon Upazila (Mymensingh district) with an area of 401.16 sq km, is surrounded by Trishal and Nandail upazilas on the north, Kapasia and Sreepur upazilas on the south, Hossainpur and Pakundia upazilas on the east, Trishal, Bhaluka and Sreepur upazilas on the west. 

Main rivers are Old Brahmaputra, Banar. Noted beels are Taltala, Subi, Mulaplia, Badua, Hoara. 

Gaffargaon (Town) consists of 9 wards and 19 mahallas. The area of the town is 12.21 sq km. It has a population of 20284; male 51.29%, female 48.71%. The literacy rate among the town people is 37.9%. It has a dakbungalow. 

Administration Gaffargaon thana was established in 1909 and was turned into an upazila in 1982. The upazila consists of 15 union parishads, 202 mouzas and 218 villages. 

Archaeological relics and heritage Tomb and Dighi of Kalu Shah. 

Historical events On 17 April 1971 two fighter planes of the Pakistan army opened fire by machine gun on Gaffargaon in which 17 people were killed and more than one hundred were wounded. 

Marks of War of Liberation Mass killing site 1, memorial monument 1. 

Religious institutions Mosque 612, temple 12 and tomb 3. 

Population 379803; male 51.04%, female 48.96%; Muslim 98.13%, Hindu 1.74%, Buddhist 0.01%, Christian 0.01 and others 0.11%.

Literacy and educational institutions Male 24.3%, female 26.1%. 

Educational institutions: college 7, high school 39, secondary school 30, madrasa 10, government primary school 160, non-government primary school 30 and community school 30. 

Noted educational institutions: Gaffargaon Islamia Government High School (1902), Kandhipara Askar High School (1906). 

Locally published newspapers and periodicals Extinct: Anirban, Pous, Agnishila (monthly), Amader Kagaj (quarterly). 

Cultural organisations Club 1, public library 1, cinema hall 2, opera party 1, literary society 1, rural club 12 and women's organisation 5. 

Main occupations Agriculture 58.74%, agricultural labourer 14.67%, wage labourer 2.19%, commerce 8.45%, service 5.08%, others 10.87%. 

Land use Total cultivable land 30451.23 hectares; fallow land 352.08 hectares; land under irrigation 11508.7 hectares. 

Land control Among the peasants 35% are landless, 30% small, 25% intermediate and 10% rich. 

Value of land The market value of the land of the first grade is Tk. 10000 per 0.01 hectare. 

Main crops Paddy, wheat, potato, mustard seed, peanut, brinjal, pulse, onion and garlic. Extinct and nearly extinct crops Sesame, sugarcane, jute and kalai. 

Main fruits Jackfruit, mango, banana, papaya and litchi. 

Fisheries, dairies, poultries Fishery 10, dairy 1, poultry 17 and hatchery 19. 

Communication facilities Roads: pucca 75 km, semi pucca 5 km and mud road 718 km; waterways 69 nautical mile km; railways 24.75 km. 

Traditional transport Palanquin, bullock cart and horse carriage. These means of transport are either extinct or nearly extinct.

Manufactories Flour mill 48, rice mill 58, oil mill 2, saw mill 10, ice factory 19, press 2 and soap factory 1. 

Cottage industries Goldsmith 50, blacksmith 80, potteries 10, wood work 75, tailoring 500, welding 22, bamboo work 150, weaving 15. 

Hats, bazars and fairs Total number of hats and bazars are 57, most noted of which are Saltia Bazar and Datter Bazar; fairs 5. 

Main exports Paddy, jute and leather. 

NGO activities Operationally important NGOs are Brac. ASA, Grameen Bank, and SSS. 

Health centres Upazila health complex 1, family welfare centre 9, rural health centre 4.