Changlang District is located in the south-eastern corner of Arunachal Pradesh. It has an area of 4662 sq.km. and lies between the 26º40’to 27º 40’N Latitude and 95º11′ to 97º10’E Longitude.
Sub Divisions in Changlang District: (04 Nos.)
- Changlang with Deputy Commissioner
- Miao with Additional Deputy Commissioner
- Bordumsa with Additional Deputy Commissioner
- Jairampur with Additional Deputy Commissioner
Anchal Block in Changlang District: (07 Nos.)
- 14/1 Bordumsa
- 14/2 Diyun
- 14/3 Miao
- 14/4 Nampong – Rima Putok
- 14/5 Manmao – Jairampur
- 14/6 Khimyang
- 14/7 Changlang
Circles in Changlang District: (13 Nos.)
- Changlang with Deputy Commissioner
- Miao with Additional Deputy Commissioner
- Bordumsa with Additional Deputy Commissioner
- Nampopng with Sub Divisional Officer
- Namtok with Extra Assistant Commissioner
- Jairampur with Additional Deputy Commissioner
- Kharsang with Circle Officer
- Manmao Extra Assistant Commissioner
- Diyun with Extra Assistant Commissioner
- Khimiyang Extra Assistant Commissioner
- Vijaynagar with Circle Officer
- Yatdam with Circle Officer
- Rima- Putok with Circle Officer
- Kantang with Circle Officer
- Renuk with Circle Officer
- Lyngok-Longtoi with Circle Officer
Distance of administrative centres from Changlang Headquarters:
| Sl. No. | Place | Distance | Mode of communication |
| Changlang to Khimyang | 36 km | APST | |
| Changlang to Manmao | 130 km | APST | |
| Changlang to Jairampur | 90 km | APST | |
| Changlang to Nampong | 105 km | APST | |
| Changlang to Kharsang | 90 km | APST | |
| Changlang to Miao | 112 km | APST daily service | |
| Changlang to Vijoynagar (via Miao) | 269 km | APST | |
| Changlang to Namtok | 56 km | APST | |
| Changlang to Diyun (via Miao) | 149 km | APST | |
| Changlang to Bordumsa | 105 km | APST | |
| Changlang to Yatdam | 16 km | APST | |
| Changlang to Rima – Putok | 120 km | APST | |
| Changlang to Renuk | 146 km | ||
| Changlang to Lyngok-Longtoi | 120 km |
Physical Region:
The geographical region of the district has its distinct features. The place like Miao, Diyun, Bordumsa, Kharsang circle and few stripes of land in some parts of Changlang headquarter, are plain where as rest of the district is covered with hills. The altitude of hills varies from 200 m to 4500 m that generally slopes downward the northeast. The highest peak of the district is 4500m above sea level.
Climate, Temperature and rainfall
The climate of the district varies from place to place due to mountainous nature of the terrain. The areas located in lower elevation and in the valleys experience hot and humid climate in summer. The climate of the rest hilly areas is moderate and pleasant. The maximum temperature recorded is about 26.96 ºC and the minimum temperature recorded is 18.63ºC. The quantity of rainfall varies significantly at different places due to terrains. The average annual rainfall varies from 3800mm – 4866mm.