Sansha City is a prefecture-level city in Hainan Province, located in the south-central part of Nanhai, China, and in the south of Hainan Province. The islands, reefs and sea areas under the jurisdiction of Xisha Islands, zhongsha islands and Nansha Islands have a land area of more than 20 square kilometers and a total area of more than 2 million square kilometers. Sansha City has jurisdiction over Xisha District and Nansha District, and has jurisdiction over 10 communities, with more than 2,500 permanent residents and 448 registered residents. The municipal government is located in Yongxing Island, Xisha District.