Langlongdang is a village in Donka tehsil in district of Karbi Anglong, Assam, India. As per the data provided by Census of India in 2011, total population of Langlongdang was 133 which includes 73 males and 60 females. Langlongdang covers 100 ha area. Pincode of Langlongdang is 782450.