Uttar Nangdorbari is a village in Sidli tehsil in district of Bongaigaon, Assam, India. As per the data provided by Census of India in 2011, total population of Uttar Nangdorbari was 1,054 which includes 537 males and 517 females. Uttar Nangdorbari covers 222.26 ha area. Pincode of Uttar Nangdorbari is N/A.