Uttar Niansiri is a village in Chariduar tehsil in district of Sonitpur, Assam, India. As per the data provided by Census of India in 2011, total population of Uttar Niansiri was 130 which includes 60 males and 70 females. Uttar Niansiri covers 93.33 ha area. Pincode of Uttar Niansiri is N/A.