Kulajan Gaon is a village in Sissibargaon tehsil in district of Dhemaji, Assam, India. As per the data provided by Census of India in 2011, total population of Kulajan Gaon was 863 which includes 421 males and 442 females. Kulajan Gaon covers 67.47 ha area. Pincode of Kulajan Gaon is 786110.