Kulwai is a village in Majhgaon tehsil in district of Pashchimi Singhbhum, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Kulwai was 662 which includes 333 males and 329 females. Kulwai covers 405 ha area. Pincode of Kulwai is 833214.