Kotoalsai is a village in Kharsawan tehsil in district of Saraikela Kharsawan, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Kotoalsai was 463 which includes 231 males and 232 females. Kotoalsai covers 103 ha area. Pincode of Kotoalsai is 833201.