Derhgaon is a village in Dawath tehsil in district of Rohtas, Bihar, India. As per the data provided by Census of India in 2011, total population of Derhgaon was 4,865 which includes 2,533 males and 2,332 females. Derhgaon covers 82.1 ha area. Pincode of Derhgaon is N/A.