Garjasaran is a village in Dhanwar tehsil in district of Giridih, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Garjasaran was 3,552 which includes 1,850 males and 1,702 females. Garjasaran covers 183 ha area. Pincode of Garjasaran is 825412.