Kalai Upazila (Joypurhat district) area 166.30 sq km, located in between 24°59 and 25°11 north latitudes and in between 89°08 and 89°17 east longitudes. It is bounded by Panchbibi and Gobindaganj upazilas on the north, Khetlal and Shibganj (Bogra) upazilas on the south, Shibganj and Gobindaganj upazilas on the east, Khetlal and Joypurhat Sadar upazilas on the west.
Population Total 129329; male 65431, female 63898; Muslim 123490, Hindu 5548, Buddhist 41 and others 250. Indigenous communities such as santal and Buno belong to this upazila.
Water bodies main rivers: Harabati, Nagar.
Administration Kalai Thana was formed on 19 August 1981 and it was turned into an upazila on 3 July 1983. Once Kalai upazila was included in Bogra district; it was included in Joypurhat district on 26 February 1984.
Archaeological heritage and relics: Nandail Dighi, Harunja Dhap and Mazar (Harunja); Baligram Rajbari, ancient relics and copperplate (Matrai).
Literacy rate and educational institutions; average literacy: 45.1%; male 51.4%, female 38.6%. Educational institutions: college 2, technical college 2, secondary school 26, primary school 48, community school 5, madrasa 33. Noted educational institution is Kalai Moyen Uddin High School (1913).
Newspapers and periodicals: Ekal and Sekal.
Cultural organisations: Library 1, club 37, cinema hall 2.
Tourist spots: Nandail Dighi (Harunja).
Main sources of income: Agriculture 76.72%, non-agricultural labourer 2.23%, industry 0.24%, commerce 8.78%, transport and communication 3.04%, service 2.92%, construction 0.51%, religious service 0.10% and others 5.46%.
Ownership of agricultural land: Landowner 59.67%, landless 40.33%; agricultural landowner: urban 55.82% and rural 59.90%.
Main crops: Paddy, Jute, Wheat, Potato, Sugarcane, Mustard, Vegetables. Main fruits: Mango, Jackfruit, Papaya. Extinct or nearly extinct crops: Watermelon.
Fisheries, dairies and poultries: Dairy 113, poultry 96. Communication facilities: Pucca road 83 km, semi-pucca road 12.06 km, mud road 831.77 km. Extinct or nearly extinct traditional transport: Palanquin, Bullock cart.
Noted manufactoriesa are Cold storage, Ice factory. Cottage industries: Goldsmith, potteries, weaving, blacksmith, cane work, bamboo and wood work.
Hats, bazars and fairs: Hats and bazars are 15, fairs 3, most noted of which are Punat Hat, Molamgari Hat, Kalai Hat, Harunja Hat, Kalai Mela and Molamgari Mela. Main exports: Paddy, Rice, Potato.
Access to electricity: All the wards and unions of the upazila are under rural electrification net-work. However 27.61% of the dwelling households have access to electricity.
Sources of drinking water Tube-well 96.72%, pond 0.08%, tap 0.49% and others 2.71%.
Sanitation 23.81% (rural 22.06% and urban 53.61%) of dwelling households of the upazila use sanitary latrines and 13.41% (rural 13.35% and urban 14.44%) of dwelling households use non-sanitary latrines; 62.78% of households do not have latrine facilities. Health centres: Hospital 1, union health and family welfare centre 5, growth centre 5, community clinic 17, clinic 1. — Banglapedia