Lumbai is a village in Bandgaon tehsil in district of Pashchimi Singhbhum, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Lumbai was 916 which includes 460 males and 456 females. Lumbai covers 279 ha area. Pincode of Lumbai is 835216.