Daihar 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 Daihar was 2,611 which includes 1,386 males and 1,225 females. Daihar covers 215.35 ha area. Pincode of Daihar is 825406.