Siwanpatti is a village in Kurhani tehsil in district of Muzaffarpur, Bihar, India. As per the data provided by Census of India in 2011, total population of Siwanpatti was 1,023 which includes 525 males and 498 females. Siwanpatti covers 44.97 ha area. Pincode of Siwanpatti is 842001.