Kumoi Gaon is a village in Mayong tehsil in district of Morigaon, Assam, India. As per the data provided by Census of India in 2011, total population of Kumoi Gaon was 1,599 which includes 796 males and 803 females. Kumoi Gaon covers 265.37 ha area. Pincode of Kumoi Gaon is 782411.