Sanmaninathpur is a village in Kharagpur II tehsil in district of Paschim Medinipur, West Bengal, India. As per the data provided by Census of India in 2011, total population of Sanmaninathpur was 738 which includes 371 males and 367 females. Sanmaninathpur covers 143.68 ha area. Pincode of Sanmaninathpur is 721301.