Sarmastpur is a village in Vidyapati Nagar tehsil in district of Samastipur, Bihar, India. As per the data provided by Census of India in 2011, total population of Sarmastpur was 1,167 which includes 582 males and 585 females. Sarmastpur covers 29 ha area. Pincode of Sarmastpur is 848503.