Madanasai is a village in Gobindpur tehsil in district of Saraikela Kharsawan, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Madanasai was 359 which includes 173 males and 186 females. Madanasai covers 113 ha area. Pincode of Madanasai is 831002.