Nahar Sumaimari is a village in Jonai tehsil in district of Dhemaji, Assam, India. As per the data provided by Census of India in 2011, total population of Nahar Sumaimari was 228 which includes 109 males and 119 females. Nahar Sumaimari covers 116 ha area. Pincode of Nahar Sumaimari is 787060.