Ganga Sarai 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 Ganga Sarai was 7,721 which includes 4,047 males and 3,674 females. Ganga Sarai covers 323 ha area. Pincode of Ganga Sarai is N/A.