Longnit Thapa is a village in Diphu tehsil in district of Karbi Anglong, Assam, India. As per the data provided by Census of India in 2011, total population of Longnit Thapa was 309 which includes 169 males and 140 females. Longnit Thapa covers 15 ha area. Pincode of Longnit Thapa is 782461.