Oreya is a village in Hazaribag tehsil in district of Hazaribagh, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Oreya was 4,925 which includes 2,547 males and 2,378 females. Oreya covers 148 ha area. Pincode of Oreya is 825301.