Ghausnagar is a village in Runisaidpur tehsil in district of Sitamarhi, Bihar, India. As per the data provided by Census of India in 2011, total population of Ghausnagar was 1,958 which includes 1,049 males and 909 females. Ghausnagar covers 103.9 ha area. Pincode of Ghausnagar is N/A.