Longleng District, the Home of the Phom Nagas, is the tenth district of Nagaland, formed as a result of bifurcation of Tuensang District. It is bounded by Mon District in the East, Mokokchung District in the west, Sivasagar District (Assam) in the North and Tuensang District in the south. Longleng District is headquartered at Longleng Town (about 1,100m above sea level). Longleng and Tamlu are the major towns of the district. Most of the inhabitants belong to the Phom tribes.