Sankhuwasabha District (Nepali: सङ्खुवासभा जिल्ला ) is one of 14 districts of Koshi Province of eastern Nepal. The district's area is 3,480 km with a population of 159,203 in 2001 and 158,742 in 2011. The administrative center is Khandbari.
Bordering districts are Bhojpur, Tehrathum, Dhankuta, Solukhumbu and Taplejung in Koshi Province. Tingri County of Shigatse Prefecture in the Tibet Autonomous Region of China borders to the north.
Taplejung District (Nepali: ताप्लेजुङ जिल्ला ) is one of seventy-seven districts of Nepal and one of the 14 districts of Koshi Province. It is located deep in the Himalayas in Eastern Nepal with བོད to the north across the Himalayas. Taplejung is the third largest district (by area) of Nepal.
The district covers an area of 3,646 square kilometres (1,408 sq mi) and has a total population (2011 Nepal census) of 127,461. The district is surrounded by Tibet in the north, Sankhuwasabha District in the west, Tehrathum District and Panchthar District in the south and Sikkim (India) in the east. Geographically, the district is located at a latitude of 27º 06' to 27º 55'N and a longitude of 87º57' to 88°12' E.