Lalmonirhat District (Rajshahi division) with an area of 1241.46 sq km, is bounded by Kuchbihar and Jalpaiguri districts of West Bengal (India) on the north, rangpur district on the south, kurigram district and Kuchbihar district of West Bengal on the east, Nilphamari and Rangpur districts on the west. The district is striped shape. Main rivers 7, most noted of which are Tista, Dharla and Saniajan. The river Saniajan originating from the Himalaya has strong current. Sarnamati, Trimohoni, Ratnai and Sati rivers are almost silted. The biggest irrigation project of the country, Tista Barrage Project (length 615 m) is located at Doani of Hatibandha upazila. Temperature: highest 32.3°C, lowest 11.2°C; total rainfall 2931 mm.

Lalmonirhat (Town) consists of 9 wards and 63 mahallas. It's municipality was established in 1973. The area of the town is 17.62 sq km. It has a population of 56672; male 52.02% and female 47.98%; density of population is 3216 per sq km. The literacy rate among the town people is 47.9%. Lalmonirhat town is well known as a railway junction from the beginning of the nineteenth century. Once upon a time one could go to the foot of the Himalayan from Lalmonirhat. The head quarters of the western region of Bangladesh Railway are located here. At present the city is expanding towards Saptabari union to the west and Kalurghat union to the east. The town has one dakbungalow and one Circuit House.


Administration Lalmonirhat district was established in 1984. It consists of 5 upazilas, 2 municipalities, 18 wards, 85 mahallas, 41 union parishads, 425 mouzas, 484 villages and 33 enclaves. The upazilas are lalmonirhat sadar, aditmari, hatibandha, kaliganj and patgram; Municipalities: Lalmonirhat Sadar and Patgram. Lalmonirhat can be called a district of enclaves. The total area of the 33 enclaves (27 are in Patgram) is 1807 hectares. The biggest and most noted enclaves are Dahagram and Angarpota. The Tin-Bigha corridor connects these two enclaves with the main land.