Raghunathpur is a village in Barharia tehsil in district of Siwan, Bihar, India. As per the data provided by Census of India in 2011, total population of Raghunathpur was 1,947 which includes 1,000 males and 947 females. Raghunathpur covers 65 ha area. Pincode of Raghunathpur is N/A.