The Khunjerab Pass between Pakistan and China for tourism and limited trade in the 1980s. With the creation of the
China-Pakistan Economic Corridor (CPEC) in 2016, Sost took on a more central role in a $46 billion effort to boost trade for Pakistan by broadening its range of potential partners through the Middle East, Africa, and Europe. Given Sost's status as a transportation hub, it plays an important role regarding both passengers and cargo crossing the Pakistan-China border. Branches of the Pakistan immigration and customs departments are correspondingly based in Sost. Sost is also home to a Serena Hotel. The Silk Route Dry Port commenced its business operations at the port in Sost, Upper Hunza, near the Khunjerab Pass in Gilgit-Baltistan. The annual trade volume between these two countries has increased from approximately $50 million in the mid '70s ($300 million in 2019)to $14.5 billion in 2019 - an increase of almost 5000%. Trade increased year on year 12.5% to $16.724 billion between January and August 2025. Sost Dry Port collected more than Rs9.5 billion in 2024, a 72% increase over the Rs5.525 billion collected the previous year. == Demography ==