Chauhali Upazila (Sirajganj district) with an area of 243.57 sq km, is surrounded by Belkuchi upazila on the north Daulatpur upazila on the south,Tangail Sadar and Nagarpur upazilas on the east, Shahajadpur and Bera upazilas on the west. 

Main River is the Jamuna 

Chauhali (Town) consists of one mouza with an area of 16.33 sq km. It has a population of 12139; male 51.61%, female 48.39%, density of population is 743 per sq km. Literacy rate among the town people is 20.6%. The town has two dakbungalows. 

Administration Chauhali thana was turned into an upazila in 1984. The upazila consists of five union parishads, 152 mouzas and 101 villages. 

Archaeological heritage and relics Arphail Sagardighi Mosque and Twin Graves (sixteenth century, Sarail), Arphannesa Mosque (1662, Sarail), Bhadurghar Shahi Mosque (1084 AH), Ulchapara Mosque (sixteenth century), tomb of Kalla Shahid (R, Akhaura), Kalbhairab Mandir (Brahmanbaria), Sree Sree Anandamoye Ashram (seventeenth century) at Kasba, Satidaha Mandir (Biddakut), Shiva Mandir (Natghar), Sarvadharma Samanya Mandir (Kalikachha), Jagannath Mandir (Nasirnagar), Bishnu Statue (Baghaura), BUDDHIST VIHARAs (Devgram), Kailaghar Jangal (Kasba), Hatir Pool (elephant bridge) at Baraiura, Zamindar Bari of Haripur, Basudeva Statue (Kalikachha), Nabinagar Math, Haraspur Zamindar Bari, Brahmanbaria Archives and Museum, Anderson Memorial (Kautali). 

Historical events Brahmanbaria was a part of SAMATATA Janapada of the ancient Bengal. The first and temporary capital of Isha khan was at Sarail 10 km on the north of Brahmanbaria Town. When the SWADESHI MOVEMENT began in the wake of the partition of Bengal (1905), revolutionary Ullaskar Datta (Aviram) was convicted for throwing bomb explosion and was deported to the Andamans. On 14 December 1931 Suniti Chowdhury, Shanti Ghosh and Gopal Deb killed the then District magistrate CCB Stevens at his residence by gun shot. During the Peasant Movement in 1930 Congress leader Abdul Hakim asked the peasant to stop payment of taxes. During the no-rent movement four civilians were killed when the British soldiers indiscriminately fired on civilians. During the War of Liberation Bir Srestha MOHAMMAD MOSTAFA KAMAL was killed in an encounter at Daruin of Akhaura.

Population 108459; male 52%, female 48%; Muslim 99.5%, Hindu 0.5%. 

Religious institutions Mosque 200, temple 2, tomb 1, most noted of which is tomb of Eunus Shah Enayetpuri. 

Literacy and educational institutions Average literacy 23.1%; male 30.6% and female 15.3%. 

Educational institutions: college 3, high school 12, madrasa 14, government primary school 60, non-government primary school 65, kindergarten school 2. 

Noted educational institutions: Pakrashi Primary school (1856), Khaskaulia K R Pilot High School (1942) and Sambhudia Azizia Dakhil Madrasa and High School (1932). 

Cultural organisations Rural club 14, cinema hall 1 and playground 10.

Main occupations Agriculture 35.37%, agricultural labourer 23.39%, wage labourer 5.01%, commerce 8.84%, service 4.93%, weaving 6.26% and others 16.20%. 

Land use Cultivable land 7250.76 hectares, uncultivable char land 7389.64 hectares; single crop 60%, double crop 30% and treble crop land 10%; land under irrigation 40%. 

Land control Among the peasants 10% are landless, 32% small, 28% intermediate and 14% rich; land per head 0.49 hectare. 

Value of land The market value of the land of the first grade is approximately Tk. 4000 per 0.01 hectare. 

Main crops Paddy, jute, wheat, sweet potato, onion, garlic and ground nut. Extinct or nearly extinct crops Linseed, sesame and arahar. 

Main fruits Mango, jackfruit, papaya and banana. Fisheries, dairies, poultries Poultry 7 and fishery 22. 

Communication facilities Roads: pucca 6 km and mud road 75 km. 

Traditional transport Palanquin (extinct). Manufactories Flour mill 2 and ice factory 5. 

Cottage industries Bamboo work 87, goldsmith 20, blacksmith 50, wood work 30, tailoring 188 and bidi 1. 

Hats, bazars and fairs Hats and bazars are 13, most noted of which are Enayetpur and Jotpara Hat.