Bamnigaon is a village in Rampurhat I tehsil in district of Birbhum, West Bengal, India. As per the data provided by Census of India in 2011, total population of Bamnigaon was 855 which includes 436 males and 419 females. Bamnigaon covers 234.95 ha area. Pincode of Bamnigaon is 731224.