No 1 Mahanpur 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 No 1 Mahanpur was 323 which includes 171 males and 152 females. No 1 Mahanpur covers 90 ha area. Pincode of No 1 Mahanpur is 787061.