Sathmalpur is a village in Warisnagar tehsil in district of Samastipur, Bihar, India. As per the data provided by Census of India in 2011, total population of Sathmalpur was 11,554 which includes 6,037 males and 5,517 females. Sathmalpur covers 621.18 ha area. Pincode of Sathmalpur is 848101.