Kayai Mari Gaon is a village in Dhekiajuli tehsil in district of Sonitpur, Assam, India. As per the data provided by Census of India in 2011, total population of Kayai Mari Gaon was 258 which includes 132 males and 126 females. Kayai Mari Gaon covers 108.56 ha area. Pincode of Kayai Mari Gaon is 784149.