Dumbisai is a village in Chaibasa tehsil in district of Pashchimi Singhbhum, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Dumbisai was 968 which includes 469 males and 499 females. Dumbisai covers 62 ha area. Pincode of Dumbisai is 833201.