Uttar Sonari is a village in Sonari tehsil in district of Sivasagar, Assam, India. As per the data provided by Census of India in 2011, total population of Uttar Sonari was 70 which includes 32 males and 38 females. Uttar Sonari covers 20.58 ha area. Pincode of Uttar Sonari is 785690.