As of February 2024[update], the Indian state Arunachal Pradesh comprised 27 districts, not including Itanagar capital complex, with more districts proposed. Most of the districts are inhabited by various tribal groups. The latest and presently valid official map of districts of Arunachal Pradesh, after the most recent new districts were last announced on 30 August 2018, is in the external links.
| 1965 | [5] Kameng, Subansiri, Siang, Lohit and Tirap |
|---|---|
| 1980 | [9] Lower Subansiri, Upper Subansiri, Lohit, Dibang Valley, East Siang, West Siang, East Kameng, West Kameng, Tirap |
| 1984 | [10] Tawang |
| 1987 | [11] Changlang |
| 1992 | [12] Papum Pare |
| 1994 | [13] Upper Siang |
| 2001 | [14, 15] Kurung Kumey, Lower Dibang Valley |
| 2004 | [16] Anjaw |
| 2012 | [17] Longding |
| 2014 | [18] Namsai |
| 2015 | [19, 20] Kra Daadi, Siang |
| 2017 | [21, 22] Lower Siang, Kamle |
| 2018 | [23-25-26] Pakke-Kessang, Lepa-Rada, Shi-Yomi |
| 2024 | [27, 28] Bichom Keyi Panyor |
| Numbers in brackets represent total number of districts in the state | |
In some contexts, the state was categorized into five older divisional groupings based on river basins and geography:

Arunachal Pradesh is primarily organized into administrative divisions, each headed by a divisional commissioner, an officer belonging to the Indian Administrative Service(IAS) and a deputy inspector general of police, an officer belonging to the Indian Police Service(IPS).
| Sl. No. | Division | Headquarters | Coverage | Districts |
|---|---|---|---|---|
| 1 | West Division | Yazali (Lower Subansiri) | Western mountainous and foothills regions | |
| 2 | Central Division | Siang | Siang and Subansiri river basins | |
| 3 | East Division | Namsai | Eastern river basins and border regions near Myanmar |
Itanagar capital complex is administered by its own Deputy Commissioner, and contains the three circles of Itanagar, Naharlagun, and Banderdewa. In January 2013 the Arunachal Pradesh government approved in principle the creation of a "Capital district". The capital complex is currently treated as its own district by some government departments, the Ministry of Micro, Small and Medium Enterprises for example, and the Arunachal Pradesh State portal in particular. But the Arunachal Pradesh reorganization of district Act of 1980 with the latest amendments from 2024 does not list Itanagar capital complex as a district.
The districts of Arunachal Pradesh state are administrative geographical units, each headed by a deputy commissioner, an officer belonging to the Indian Administrative Service and a superintendent of police, an officer belonging to the Indian Police Service.
List of districts is as follows:
| Sl No | Code | District | Headquarters | Population (2011) |
Area (km2) |
Density (/km2) |
Year created |
Map |
|---|---|---|---|---|---|---|---|---|
| 1 | AJ | Anjaw | Hawai | 21,089 | 6,190 | 3 | 2004 | |
| 2 | Bichom | Napangphung | 9,710 | 2,897 | 12 | 2024 | ||
| 3 | CH | Changlang | Changlang | 147,951 | 4,662 | 32 | 1987 | |
| 4 | Dibang Valley | Anini | 7,948 | 9,129 | 1 | 2001 | ||
| 5 | EK | East Kameng | Seppa | 78,413 | 4,134 | 19 | 1980 | |
| 6 | ES | East Siang | Pasighat | 99,019 | 4,005 | 25 | 1980 | |
| 7 | Kamle | Raga | 22,256 | 200 | 111.28 | 2017 | ||
| 8 | Keyi Panyor | Yachuli | 2024 | |||||
| 9 | Kra Daadi | Jamin | 22,290 | 2,202 | 10 | 2015 | ||
| 10 | Kurung Kumey | Koloriang | 89,717 | 8,818 | 10 | 2001 | ||
| 11 | Lepa-Rada | Basar | 2018 | |||||
| 12 | EL | Lohit | Tezu | 145,538 | 2,402 | 61 | 1980 | |
| 13 | LD | Longding | Longding | 60,000 | 1,200 | 50 | 2012 | |
| 14 | UD | Lower Dibang Valley | Roing | 53,986 | 3,900 | 14 | 2001 | |
| 15 | Lower Siang | Likabali | 80,597 | 2017 | ||||
| 16 | LB | Lower Subansiri | Ziro | 82,839 | 3,460 | 24 | 1980 | |
| 17 | Namsai | Namsai | 95,950 | 1,587 | 60 | 2014 | ||
| 18 | Pakke-Kessang | Lemmi | 2018 | |||||
| 19 | PA | Papum Pare | Yupia | 176,385 | 2,875 | 61 | 1992 | |
| 20 | Shi-Yomi | Tato | 13,310 | 2,875 | 4.6 | 2018 | ||
| 21 | Siang | Boleng | 31,920 | 2,919 | 11 | 2015 | ||
| 22 | TA | Tawang | Tawang Town | 49,950 | 2,085 | 24 | 1984 | |
| 23 | TI | Tirap | Khonsa | 111,975 | 2,362 | 47 | 1965 | |
| 24 | US | Upper Siang | Yingkiong | 33,146 | 6,188 | 5 | 1994 | |
| 25 | UB | Upper Subansiri | Daporijo | 83,205 | 7,032 | 12 | 1980 | |
| 26 | WK | West Kameng | Bomdila | 87,013 | 7,422 | 12 | 1980 | |
| 27 | WS | West Siang | Aalo | 112,272 | 8,325 | 12 | 1980 | |
Several local movements and political representatives have proposed the creation of new administrative districts across Arunachal Pradesh to address challenges related to geographical isolation, border management, and administrative accessibility.
| Proposed District | Proposed HQ | Expected Area of Jurisdiction and Rationale |
|---|---|---|
| Proposed from Tawang | ||
| Zemithang | Zemithang | Located northwest of Tawang town, near the India-Tibet-Bhutan tri-junction. Proposed to improve border area administration. |
| Lumla | Lumla | Located west of Tawang town, near the Bhutan border. |
| Mago | Mago | Located east of Tawang town and north of Nafra. |
| Proposed from West Kameng | ||
| Semteng | Semteng | Located on the southeastern border of Bhutan, west of Shergaon and Bomdila. |
| Sangti | Sangti | Located in the Sangti Valley, northeast of Bomdila. |
| Proposed from Kurung Kumey (and adjacent districts) | ||
| North Subansiri | Sarli | Proposed to be carved from three existing districts along the northern Indo-China border: entailing Sarli and Damin (from Kurung Kumey), Pipsorang and Longding Koling (from Kra Daadi), and Taksing, Limeking, Nacho, and Siyum (from Upper Subansiri). Located west of Koloriang.[citation needed] |
| Kumey | Patuk | Proposed from Kurung Kumey district, covering an estimated population of 12,000 across the Damin, Parsi-Parlo, and Panja-Sing circles. Located east of Sarli and Koloriang. |
| Chulla | Chulla | Situated within the Kurung Kumey administrative boundaries. |
| Proposed from Papum Pare | ||
| Sagalee | Sagalee | Proposed to entail the existing sub-divisions of Sagalee, Leporiang, Parang, and Mengio. |
| Proposed from Upper Subansiri | ||
| Limeking | Limeking | Located northwest of Nacho. |
| Sinalita | Nacho | Comprising the administrative circles of Siyum, Nacho, Limeking, and Taksing in the northern section of Upper Subansiri. |
| Proposed from Shi Yomi | ||
| Mechuka | Mechuka | Located in the existing Shi Yomi district, east of Nacho. |
| Monigong | Monigong | Located east of Mechuka and west of Tuting. |
| Proposed from Upper Siang | ||
| Tuting | Tuting | Expected to include the Singa, Gelling, Paling, Miging, and Tuting circles along the India-China border and the Yarlung Tsangpo River (Brahmaputra). |
| Sinik (Singa) | Singa | Located southeast of Tuting towards Anini, along the India-China border. |
| Proposed from Dibang Valley | ||
| Asunli | Asunli | Western part of the district, west of Anini towards Tuting and Singa. |
| Engolin | Engolin | Northern part of the district, north of Mipi and Anini. |
| Malinye | Malinye | Eastern part of the district, southeast of Anini and east of Etalin towards Chaglagam (north of Fish Tail-II). |
| Esuli (Yamne-Sikang) | Esuli | Southern part of the district, located along the Sikang (Dibang) river, approximately 180 km south of Anini and 145 km north of Roing. The proposed headquarters sits near the confluence of tributary rivers along the under-construction Arunachal Frontier Highway. |
| Proposed from Anjaw | ||
| Chaglagam | Chaglagam | Northwestern part of Anjaw district, immediately south of Fish Tail-II. |
| Hayuliang | Hayuliang | Southwestern part of Anjaw district. |
| Dong | Dong | Northeastern part of Anjaw district, including Kibithu. |
| Proposed from Changlang | ||
| Vijaynagar | Vijoynagar | Includes the Namdapha National Park and Tiger Reserve. |
| Diyun | Diyun | Located between the Namsai district headquarters and Miao. |
| Jairampur | Jairampur | Southwest of Diyun, on the border with Assam. |
| Nampong | Nampong | Located near the Pangsau Pass on the border with Myanmar along NH-3155 (Ledo Road). |
| Rima | Miao | Proposed in 2017 to entail the subdivisions of Diyun, Bordumsa, Kharsang, Jairampur, Nampong, Rima-Putak (Tikhak), Miao, and Vijoynagar. However, the proposal faced unanimous opposition from the Changlang People's Forum. |
| Proposed from Tirap | ||
| Borduria | Borduria | Located approximately 10 km north of the Tirap district headquarters in Khonsa. |
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