Masumnagar Urf Premnagar 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 Masumnagar Urf Premnagar was 12,052 which includes 6,407 males and 5,645 females. Masumnagar Urf Premnagar covers 843.3 ha area. Pincode of Masumnagar Urf Premnagar is 843323.