Upper Subansiri (Pron:/su:bənˈsɪɹi/) is an administrative district in the state of Arunachal Pradesh in India.

The district was formed when Subansiri district was bifurcated into Upper and Lower Subansiri districts in 1980.

The district headquarter is located at Daporijo. Upper Subansiri district occupies an area of 7,032 square kilometres (2,715 sq mi), comparatively equivalent to the United Kingdom's East Falkland. The important towns are Chetam, Giba, Taksing, Limeking, Nacho, Siyum, Payeng, Taliha, Gite Ripa, Gussar, Dumporijo, Daporijo, Maro, Baririjo and Puchigeku, each of which is the headquarters of a circle.

The 2,000-kilometre-long (1,200 mi) proposed Mago-Thingbu to Vijaynagar Arunachal Pradesh Frontier Highway along the McMahon Line, (will intersect with the proposed East-West Industrial Corridor Highway) and will pass through this district, alignment map of which can be seen here and here.

In 2006 the Indian government named Upper Subansiri one of the country's 250 most backward districts (out of a total of 640). It is the only district in Arunachal Pradesh currently receiving funds from the Backward Regions Grant Fund Programme (BRGF).

There are four Arunachal Pradesh Legislative Assembly constituencies in this district: Nacho, Taliha, Daporijo and Dumporijo. All of these are part of Arunachal West Lok Sabha constituency.

Historical population

Year	Pop.	±% p.a.
1961	24,481	—
1971	32,014	+2.72%
1981	39,410	+2.10%
1991	50,086	+2.43%
2001	55,346	+1.00%
2011	83,448	+4.19%
source:

According to the 2011 census, Upper Subansiri district has a population of 83,448, roughly equal to the nation of Andorra. This gives it a ranking of 621st in India (out of a total of 640). The district has a population density of 12 inhabitants per square kilometre (31/sq mi) . Its population growth rate over the decade 2001–2011 was 50.34%. Upper Subansiri has a sex ratio of 982 females for every 1000 males, and a literacy rate of 63.96%. Scheduled Tribes make up 93.86% of the population.

At the time of the 2011 census, 69.17% of the population spoke Tagin, 14.30% Gallong, 9.30% Nyishi, 1.14% Bhojpuri and 1.05% Nepali as their first language.

Jawahar Navodaya Vidyalaya, Megdong for Upper Subansiri district is located at a distance of about 10 km east from administrative headquarter Daporijo

Tourist sites in the area include:

• Aato Topo statue at Dumporijo;
• Menga mandir: a cave mandir with a huge Shiva Linga inside. The cave has two caves within, which goes down about 8 meters.
• Jalang waterfall at Timba village
• Keba Somara village where there is Yechung Gambung in the Subansiri river, which is believed to be linked to a cave/large crack in the mountain, 2 km away and has an associated history.
• Lingpi ligne at Dupit village has a huge Shiva Linga shaped stone (Lingpi coming out from earth) which has a
• Achin Muri is a historical place associated with the massacre of Indian Army in 1953
• Sher-e-Thappa statue commemorating an engagement with the Chinese for 72 hours in 1962 Indo-China war

Also, there is trekking from Siyum to Mechuka through the snow-laden Tikuk pass in the Tikuk mountain (during November). This trade route was part of the established barter practice between Tibet and the tribes in the region during 20th C.

• Official site