Roshanganj is a village in Banke Bazar tehsil in district of Gaya, Bihar, India. As per the data provided by Census of India in 2011, total population of Roshanganj was 2,711 which includes 1,367 males and 1,344 females. Roshanganj covers 85 ha area. Pincode of Roshanganj is 824217.