Thanchi is an Upazila of Bandarban District in the Division of Chittagong, Bangladesh.GeographyThanchi is located at. It has 2,885 households and a total area of 1020.82 km².DemographicsAccording to the 1991 Bangladesh census, Thanchi has a population of 16104. Males constituted 55.61% of the population, and females 44.39%. The population aged 18 or over was 8,639. Thanchi had an average literacy rate of 17.4% (7+ years), against the national average of 32.4%.AdministrationThanchi has 4 Unions/Wards, 12 Mauzas/Mahallas, and 82 villages.