Girdharpur is a village in Barahiya tehsil in district of Lakhisarai, Bihar, India. As per the data provided by Census of India in 2011, total population of Girdharpur was 2,694 which includes 1,408 males and 1,286 females. Girdharpur covers 128.74 ha area. Pincode of Girdharpur is 811302.