Bamun Gayan is a village in Naobaicha tehsil in district of Lakhimpur, Assam, India. As per the data provided by Census of India in 2011, total population of Bamun Gayan was 574 which includes 301 males and 273 females. Bamun Gayan covers 114.67 ha area. Pincode of Bamun Gayan is N/A.