Kamsai is a village in Gudri tehsil in district of Pashchimi Singhbhum, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Kamsai was 624 which includes 310 males and 314 females. Kamsai covers 362.01 ha area. Pincode of Kamsai is 835227.