Lamajan Joypur is a village in Jonai tehsil in district of Dhemaji, Assam, India. As per the data provided by Census of India in 2011, total population of Lamajan Joypur was 370 which includes 196 males and 174 females. Lamajan Joypur covers 71.12 ha area. Pincode of Lamajan Joypur is 787060.