Ganga Ahar is a village in Chauparan tehsil in district of Hazaribagh, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Ganga Ahar was 984 which includes 511 males and 473 females. Ganga Ahar covers 230 ha area. Pincode of Ganga Ahar is 825606.