Saithaul is a village in Gaunaha tehsil in district of Pashchim Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Saithaul was 1,056 which includes 550 males and 506 females. Saithaul covers 308.9 ha area. Pincode of Saithaul is 845455.