Chandanaish Upazila (Chittagong district) with an area of 201.99 sq km, is surrounded by Patiya and Rangunia upazilas on the north, Satkania upazila on the south, Bandarban Sadar and Satkania upazilas on the east, Anwara upazila on the west. 

Main rivers are Sangu and Chankhali. 

Chandanaish (Town) consists of two mouzas. It has an area of 3.88 sq km. The town has a population of 9678; male 51.69%, female 48.31%; population density per sq km 2494. Literacy rate among the town people is 39.2%. The town has one dakbungalow. 

Administration Chandanaish thana, now an upazila, was established in 1976. The upazila consists of 10 union parishads, 43 mouzas and 56 villages. Archaeological heritage and relics Three domed Khan Mosque (Dohazari and Baghica Hat); Chendi Muni Fora Buddha Statue (Satbaria).

Historical events The Mughal army captured northern Chittagong in 1666; later, the Mughal army crossed the Karnafully river and established their position at the northern bank of the Sangu River under Murtoza Kha. Adhu Khan and Lakshman Singh, two hazari mansabdars were deputed to defend the border of that area. Dohazari was named after the mansabdars. Later on, two forts were built there. The British built an air base at Dohazari. Towards the end of the War of Liberation, fierce battle took place between the Pakistan army and the freedom fighters in which the Pakistan army was defeated. During the liberation war the Swadin Bangla Betar Kendra was transferred to Dohazari from Chittagong town. Marks of the War of Liberation Mass killing site: on the bank of Sangu River adjacent to the Bridge (Dohazari).

Religious institutions Mosque 275, tomb 20, temple 70, Kiyang 11 and sacred place 1, most noted of which are three domed Khan Mosque, Satbaria Shanti Bihar (monastery), Gachbaria Sarbojanin Hari Mandir and Baruni Snan at Barumati Canal. 

Population 172843; male 51.27%, female 48.73%; Muslim 80.52%, Hindu 14.63%, Buddhist 3.23% and Tribal people 1.62%. 

Literacy and educational institutions Average literacy 33.9%; male 40.1%, female 27.4%. 

Educational institutions: college 5, high school 23, government primary school 64, non-government primary school 19, vocational training centre 1, madrasa 279. Cultural organisations Rural club 20, press club 2, cinema hall 2, women's organisation 1, stadium 1.

Main occupations Agriculture 28.10%, forestry 3.82%, agricultural labourer 15.65%, wage labourer 3.7%, industry 1.89%, commerce 16.97%, transport 3.02%, construction 1.11%, service 13.21% and others 12.53%. 

Land use Total cultivable land 9745.04 hectares; fallow land 91.87 hectares; plain land 50%; hilly land 30% marginal land 20%; single crop 40%, double crop 43% and treble crop land 17%. 

Cultivable land under irrigation 53%. Land control Among the peasants 54% are landless, 20% marginal, 14% small, 10% intermediate and 2% rich; cultivable land per head 0.09 hectare.

Value of land The market value of the land of the first grade is approximately Tk 12500 per 0.01 hectare. 

Main crops Paddy, potato, chilli, mustard seed, various kitchen vegetables. Extinct or nearly extinct crops Jute, san (kind of hemp/flax), tea, watermelon, tobacco, sweet potato. 

Main fruits Jackfruit, pineapple guava, lemon. 

Fisheries, dairies, poultries Fishery 240, hatchery 3 and dairy 1. Communication facilities Roads: pucca 30 km, semi pucca 50 km and mud road 150 km; waterways 19 nautical mile; railways 12 km. 

Traditional transport Palanquin (extinct), bullock cart (nearly extinct).

Manufactories Garment industry 2, cold storage 2, ice factory 3, printing press 2, saw mill 35, welding 10, rice and flour mill 133. 

Cottage industries Weaving 30, goldsmith 20, blacksmith 30, potteries 40, wood work 60, bamboo work 150, bakery 30 and sewing 168. 

Hats, bazars and fairs Total number of hats and bazars are 22, most noted of which are Dohazari Hat, Baghica Hat, Roushan Hat and Khan Hat; fair: Baruni Mela. 

Main exports Railway slipper, wooden furniture, wood, milk, chicken, guava, lemon, pineapple, various kitchen vegetables.

NGO activities Operationally important NGOs are BRAC, ASA, Grameen Bank ,Uddipan, Caritas and Rural Advancement Authority. 

Health centres Government hospital 2 and health & family planning centre 7.