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.