Sarmastapur is a village in Sonarpur tehsil in district of South Twenty Four Parganas, West Bengal, India. As per the data provided by Census of India in 2011, total population of Sarmastapur was 1,195 which includes 628 males and 567 females. Sarmastapur covers 108.51 ha area. Pincode of Sarmastapur is 743330.