Sanmoni is a village in Barhait tehsil in district of Sahibganj, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Sanmoni was 3,202 which includes 1,659 males and 1,543 females. Sanmoni covers 549.79 ha area. Pincode of Sanmoni is 816109.