Beijing Camp Junior High School is located in the county of Beijing, China. This school is situated within the city proper of Beijing, which is not divided into traditional counties as in the United States. Instead, Beijing is administratively divided into districts, with the city itself being a special municipal district. The reason for this is that Beijing is the capital of China and holds a unique status in the country's administrative structure. As a result, Beijing Camp Junior High School is not in a conventional county but within the city limits of Beijing.

Data from the Beijing Municipal Government's official website indicates that Beijing is divided into 16 districts, including the city center, which is where Beijing Camp Junior High School is located. The city's administrative divisions are designed to facilitate efficient governance and service delivery within the capital. The absence of counties in Beijing reflects the city's special status and the unique administrative framework that has been established to manage its vast urban area.

The reason for this unique administrative setup is rooted in the historical and political significance of Beijing. As the capital of China, Beijing has been the center of political power for centuries. The city's administrative structure has evolved to meet the needs of its large population and to ensure effective management of its complex urban environment. The use of districts instead of counties allows for a more streamlined and responsive governance system that can address the specific challenges faced by a capital city.

In conclusion, Beijing Camp Junior High School is not in a county but is located within the city of Beijing, which is administratively divided into districts. This unique setup is a reflection of Beijing's special status as the capital of China and the need for an efficient administrative structure to manage its complex urban environment.