Mustang District (Nepali: मुस्ताङ जिल्ला) is one of the eleven districts of Gandaki Province and one of seventy-seven districts of Nepal which was a Kingdom of Lo-Manthang that joined the Federation of Nepal in 2008 after abolition of the Shah dynasty. It covers an area of 3,573 km2 (1,380 sq mi) and has a population (2011) of 13,452.[2] The headquarters is located at Jomsom. Mustang is the 5th largest district (by area) of Nepal.