Rajnagar Upazila (Maulvibazar district) area 338.15 sq km, is surrounded by Balaganj and Fenchuganj upazilas on the north, Kamalganj upazila on the south, Kulaura upazila on the east,, Maulavibazar Sadar upazila on the west. 

Manu and Kushiyara rivers and Kawadighi Haor are notable. Tea garden 12. 

Rajnagar (Town) consists of 4 mouzas. The area of the town is 8.58 sq km. It has a population of 9716; male 51.59%, female 48.41%; density of population is 1132 per sq km. Literacy rate 36.3%. Rest house 1 and community centre 1. 

Administration Rajnagar thana was established in 1845 and was turned into an upazila in 1984. The upazila consists of 8 union parishads, 142 mouzas and 255 villages. 

Historical events Raja Vanu Narayan named this area Rajnagar in 1544. The Pakistani invaders killed 69 civilians by tying one's legs with another's head and drowning in the pond. They killed 15 more at Dharbari and Shahajibari of Munshibazar and set on fire in the villages. On the 14 May 1971, Pakistani military conducted mass killing and set on fires in the villages Uttar Vag Chatura, Mahalal, Pancheshwar and Rajnagar. Rajnagar was liberated on 7 December 1971. 

Marks of War of Liberation Mass graves: bank of a pond of Panchgaon Sarkar Bazar and Khalgaon of Munsibazar; memorial monument at Munsibazar. 

Religious institutions Mosque 310, temple 51, tomb 10, sacred place 2. 

Population 174,280; male 50.66%, female 49.34%. Muslim 73.85%, Hindu 25.79%, others 0.36%; ethnic nationals: Khasi (196 families). 

Literacy and educational institutions Average literacy 25.4%; male 29.2%, female 21.5%. 

Educational institutions: college (private) 2, secondary school (private) 10, junior high school (private) 2, primary school (government) 102, primary school (private) 33, satellite school 10, madrasa 19. Aakasantosh Government Primary School (1880) and Portious High School (1893) are two of the notable educational institutions of the upazila.

Newspapers and periodicals Rajkantha (fortnightly); Shilpatari, Mukti Sangram, Manukuler Kagaz, Dip Shikha, Rajnagar Barta are either irregular or extinct.

 Cultural organisations Rural club 37, jatra party 4 (nearly extinct), literature association 5, playground 6. 

Main occupations Agriculture 34.98%, agricultural labourer 20.85%, transport 1.57%, industry 1.38%, wage labourer 5.97%, commerce 7.47%, service 5.42%, fishing 4.13%, other 18.23%. 

Land use Arable land 23114.12 hectares, barren land 7384.86 hectares; single crop 47.44%, double crop 50.62% and treble crop land 1.94%. Arable land under irrigation 51%. 

Land control Among the peasants, 35.0% are landless, 34.5% small peasants, 18.4% are intermediate and 12.1% rich; cultivable land per head 0.12 hectare. 

Value of land Market value of first grade arable land about Tk 10000 per 0.01 hectare. Main crops Tea, paddy, betel leaf, potato, aubergine, sweet pumpkin.

Extinct and nearly extinct crops Til (sesame), yam, arahar (one kind of pulse) are nearly extinct. 

Main fruits Mango, jackfruit, pineapple, black berry, banana, papaya. 

Fisheries, dairies, poultries Fishery 6, dairy 18, poultry 11. 

Communication Roads: pucca 87 km and mud road 321 km; waterways 11 nautical mile. 

Traditional transport Palanquin, horse carriage, horse driven trolley, bullock cart. These means of transport are either extinct or nearly extinct. Manufactories Tea processing factory 6, flour mill 1. 

Cottage industries Bamboo & cane work 2, goldsmith 20, blacksmith 28, tailoring 100, welding 10. 

Hats, bazars and fairs Hats and bazars are 26, fairs 4. Munsibazar, Teangrabazar, Rajnagar Bazar, Kalar Bazar are important; Baruni Mela at Bagarat, Muharram Mela at Ita and Naiyatila are also notable. 

Main exports Tea, pineapple. 

NGO activities Brac, Proshika, Grameen Bank,ASA BUP, HEED Bangladesh, Setu, VERD, CREED. 

Health centres Upazila health centre 1, family planning & satellite clinic 3, rural health centre 2, BRAC hospital 1.