Sanahpur Dih is a village in Singhwara tehsil in district of Darbhanga, Bihar, India. As per the data provided by Census of India in 2011, total population of Sanahpur Dih was 1,034 which includes 518 males and 516 females. Sanahpur Dih covers 155 ha area. Pincode of Sanahpur Dih is 847307.