Haikou, 海口 in Chinese, is the capital and most populous city of Hainan province, China. It is situated on the northern coast of Hainan, by the mouth of the Nandu River. The northern part of the city is the district of Haidian Island, which is separated from the main part of Haikou by the Haidian River, a branch of the Nandu.
Administratively, Haikou is a prefecture-level city, comprising four districts, and covering 2,280 square kilometres (880 sq mi). There are 2,046,189 inhabitants in the built up area all living within the 4 urban districts of the city.
Haikou was originally a port city. Today, more than half of the island's total trade still goes through its ports.
Also known as the "Coconut city", Haikou is an important tourist destination for China. Haikou is also developing its Meetings, Incentives, Conferencing, Exhibitions industry. The local government set up the Haikou Convention and Exhibition Bureau in June 2012 and pledged RMB35 million (US$5.6 million) to support the development of the MICE industry. More international hotel chains are also arriving.
In 2016, the China Merchants holdings group unveiled its plans to develop Shenzhen, Haikou and Sanya as the three destination ports that its South China Sea passenger cruises would serve. Subsequently, a large passenger cruise terminal was inaugurated in Shenzhen in October 2016.