Thanchi Upazila
Thanchi is an upazila of Bandarban District in the Division of Chittagong, Bangladesh.
Geography
Thanchi is located at. It has 4,872 households and a total area of 1020.82 km2. Thanchi upazila is bordered by Ruma upazila and Rangamati district to the north, Lama and Alikadam upazilas to the west, Rakhine State of Myanmar to the south and Chin State of Myanmar to the east.At the boundary with Ali Kadam Upazila, the Alikadam-Thanchi Road ascends hill Dim Pahar, making it one of the highest motorable roads in Bangladesh.
Demographics
According to the 2022 Bangladeshi census, Thanchi Upazila had 6,296 households and a population of 29,790. 11.95% of the population were under 5 years of age. Thanchi had a literacy rate of 50.68%: 60.80% for males and 39.16% for females, and a sex ratio of 111.37 males for every 100 females. 10,253 lived in urban areas.Ethnicity and religion
| Union | Muslim | Buddhist | Christian | Hindu | Others |
| Balipara Union | 810 | 3,783 | 1,541 | 244 | 119 |
| Remakri Union | 450 | 3,280 | 2,940 | 22 | 1456 |
| Thanchi Union | 1273 | 4,081 | 2,636 | 195 | 1650 |
| Tindu Union | 89 | 1,470 | 3,139 | 2 | 610 |
?Buddhist majority ? Christian majority
As of the 2022 Bangladeshi census, Thanchi upazila had a population of 29,790. The ethnic population was 26,103, of which Marma were 9,345, Mru 7,021,Tripura 6,336, Khumi 1,829, Bom 685, Chakma 488 and Khyang 359.
| Union | Bengali | Marma | Mro | Tripura | Others |
| Balipara Union | 1,183 | 2,991 | 459 | 1,182 | 682 |
| Remakri Union | 850 | 2,743 | 1,645 | 2,089 | 821 |
| Thanchi Union | 1,554 | 2,450 | 3,663 | 1,435 | 733 |
| Tindu Union | 100 | 1,161 | 1,254 | 1,630 | 1,165 |
? Marma majority ? Tripura majority
? Mro majority