As of 2026, the estimated population of Haikou, the capital city of Hainan Province in China, is approximately 1.2 million people. This figure is based on the most recent data available from the Hainan Provincial Bureau of Statistics, which provides population estimates for various cities and regions within the province. The population of Haikou has been growing steadily over the years, driven by factors such as economic development, improved infrastructure, and increased migration from other parts of China.

The growth in Haikou's population can be attributed to several key factors. Firstly, the city has experienced significant economic growth, particularly in the tourism and service sectors. As a popular tourist destination, Haikou attracts a large number of visitors each year, which in turn leads to job creation and increased demand for housing and other services. This economic activity has drawn people from other parts of China, contributing to the city's population growth.

Secondly, the government of Hainan Province has implemented various policies to promote the development of the island province, including tax incentives and infrastructure investments. These policies have made Haikou an attractive destination for businesses and individuals seeking opportunities for investment and employment. The resulting economic development has further fueled population growth in the city.

Lastly, the city's strategic location in the South China Sea has also played a role in its population growth. Haikou serves as an important transportation hub and a gateway for trade and commerce in the region. The city's role as a key player in the Belt and Road Initiative has also contributed to its economic growth and population increase.

It is important to note that population estimates can vary depending on the source and the methodology used. However, the data from the Hainan Provincial Bureau of Statistics is considered reliable and is widely used for official purposes. The estimated population of 1.2 million people for Haikou in 2026 reflects the city's dynamic growth and its position as a significant urban center in China.