Gangahar Mansuri is a village in Fatehpur tehsil in district of Gaya, Bihar, India. As per the data provided by Census of India in 2011, total population of Gangahar Mansuri was 198 which includes 106 males and 92 females. Gangahar Mansuri covers 29 ha area. Pincode of Gangahar Mansuri is 824232.