Gandhraen is a village in Andhratharhi tehsil in district of Madhubani, Bihar, India. As per the data provided by Census of India in 2011, total population of Gandhraen was 2,047 which includes 1,045 males and 1,002 females. Gandhraen covers 102 ha area. Pincode of Gandhraen is 847411.