Rasulganj Urf Koili is a village in Nanpur tehsil in district of Sitamarhi, Bihar, India. As per the data provided by Census of India in 2011, total population of Rasulganj Urf Koili was 12,578 which includes 6,588 males and 5,990 females. Rasulganj Urf Koili covers 762.6 ha area. Pincode of Rasulganj Urf Koili is 843333.