Subansai 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 Subansai was 821 which includes 423 males and 398 females. Subansai covers 62 ha area. Pincode of Subansai is 833102.