Solukhumbu District (Nepali: सोलुखुम्बु जिल्ला ) is one of 14 districts of Province No. 1 of eastern Nepal. As the name suggests, it consists of the subregions Solu and Khumbu. The district, with Salleri as its headquarters, covers an area of 3,312 km2 (1,279 sq mi) and had a population 107,686 in 2001 and 105,886 in 2011.Mount Everest is in the northern part of this district, within Sagarmatha National Park. Historically, Solukhumbu was part of Kirata Kingdoms in early and medieval era. It was a part of Majh Kirat Khambuwan (central province or region of Kirat Kingdoms). Before the unification of Nepal by king of Gorkha, what is now Solukhumbu district was part of Chaudandi of Majh Kirat (Khambuwan). In 1773 AD the King of Gorkha attacked and absorbed it into Nepal.The Solukhumbu district was established in 1962 carving out the old East No. 3 district. Before 1962 present Solukhumbu, Okhaldhunga and some parts of Khotang previously were one district “East No. 3”. Solu and Rawa thums (counties) were carved out from East No. 3 to create Solukhumbu District.