Phu Quoc district is the largest island in Vietnam. Phu Quoc and nearby islands, along with the distant Tho Chu Islands, are part of Kiên 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 Located in the Gulf of Thailand, the district of Phú Quốc includes the island proper and 21 smaller islets.

Dương Đông town is located on the west coast, and is also the administrative and largest town on the island. The other township is An Thới on the southern tip of the island.