Qinzhou is a prefecture-level city located in south-central Guangxi, southern China. It sits on the Gulf of Tonkin and serves as a regional urban center.
As of the 2020 census, the city had a total population of 3,302,238, with 1,400,134 residents living within the built-up area comprised of the Qinbei and Qinnan urban districts. By the end of 2024, the total registered population of the city reached 4,213,300.