Harnarayanpur is a village in Madhuban tehsil in district of Purba Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Harnarayanpur was 3,219 which includes 1,717 males and 1,502 females. Harnarayanpur covers 286 ha area. Pincode of Harnarayanpur is N/A.