Chalajan Kachari is a village in Subansiri tehsil in district of Dhemaji, Assam, India. As per the data provided by Census of India in 2011, total population of Chalajan Kachari was 414 which includes 208 males and 206 females. Chalajan Kachari covers 147 ha area. Pincode of Chalajan Kachari is 787055.