Zhengzhou No.16 High School Branch is located in Zhengzhou, the capital city of Henan Province, China. This location is strategic due to Zhengzhou's status as a major economic, cultural, and transportation hub in the country. The city's central position in China's railway network, along with its historical significance, makes it an ideal location for educational institutions like Zhengzhou No.16 High School Branch.

Data from the Henan Provincial Bureau of Statistics indicates that Zhengzhou has a population of over 10 million, with a rapidly growing urban population. This population density and the city's economic growth contribute to the demand for quality education, which is why prestigious schools like Zhengzhou No.16 High School Branch have branches in the city. The school's presence in Zhengzhou is also bolstered by the city's commitment to education, as evidenced by its investment in educational infrastructure and resources.

Furthermore, the city's cultural heritage and historical landmarks, such as the Erqi Memorial Tower and the Henan Museum, provide a rich educational environment for students. Zhengzhou's historical significance as the starting point of the Silk Road also offers a unique educational opportunity for students to learn about China's ancient trade routes and cultural exchanges.

In conclusion, Zhengzhou No.16 High School Branch is located in Zhengzhou, Henan Province, China, due to the city's strategic position, economic growth, and cultural heritage. These factors contribute to the school's ability to provide a high-quality education in a vibrant and historically significant environment.