As per Provisional population figures of 2011 Census, the total no of Mandals are 64.
| Demographic Label | Value |
|---|---|
| Area | 7,032 Sq Km |
| Population | 83,448 |
| No. of Census | 2011 |
| No. of Villages | 551 |
| Litrecy Rate | 63.96% |
| Blocks | 9 |
According to the 2011 census Upper Subansiri district has a population of 83,205, 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%.
Members of the Tagin, Nyishi and Galo are found in the district.