Sadai Bigha is a village in Barahiya tehsil in district of Lakhisarai, Bihar, India. As per the data provided by Census of India in 2011, total population of Sadai Bigha was 1,337 which includes 696 males and 641 females. Sadai Bigha covers 136 ha area. Pincode of Sadai Bigha is 811302.