Phu Quoc is the largest island in Vietnam. Phu Quocc and nearby islands, along with distant Tho Chu Islands, is part of Kien Giang Province as Phu Quoc District, the island has a total area of 574 square kilometres (222 sq mi) and a permanent population of approximately 103,000.[2] Located in the Gulf of Thailand, the district of Phu Quoc includes the island proper and 21 smaller islets. Duong Dong town, is located on the west coast, and is also the administrative and largest town on the island. The other township is An Thoi on the southern tip of the island. The economy is centred on fishing, agriculture and a fast-growing tourism sector. Phu Quoc has achieved fast economic growth due to its current tourism boom. Many infrastructure projects have been carried out, including several five-star hotels and resorts. Phu Quoc International Airport is the hub connecting Phu Quoc with mainland Vietnam and other international destinations.