Chugoku is a part of Japan. 
Chugoku is a part of Japan. 

Chugoku is a region in Japan. 

The land has many rolling hills. Mountains run through the middle. These mountains split the region into two parts. The north part is called San'in. It faces the Sea of Japan. The south part is called San'yo. It faces the Seto Inland Sea.
San'in has many farms. San'yo has many big factories. Hiroshima is a very large city. It has over one million people. It was rebuilt after a war. Okayama is another large city.
There are five prefectures in Chugoku. They are Hiroshima, Okayama, Shimane, Tottori, and Yamaguchi. In the year 2020, about 7.3 million people lived there. Many people live in the big cities. Other parts of the region are quiet and rural. There are also many airports for travel.
The Chūgoku region is a special part of Japan. It sits on the western end of Honshū. Honshū is the largest island in the country. 

Because of the mountains, the region has two sides. The north side is called San'in. This part faces the Sea of Japan. It is a place with an agricultural economy. This means people do a lot of farming there. The south side is called San'yō. This part faces the Seto Inland Sea. San'yō is a place with a lot of heavy industry. This means there are many large factories there. These two names come from a system called yin and yang. 
People have many ideas about the name Chūgoku. The name literally means "middle country." In the past, Japan was divided into provinces called koku. These provinces were grouped by how far they were from the capital. Some think Chūgoku was a name for middle countries to the west. Others think it meant the provinces between Kansai and Kyūshū. Kyūshū was a very important link to mainland Asia. Today, the name is also used for China. To avoid confusion, some people call the region the San'in-San'yō region. 
Many different places make up this region. There are five prefectures in total. These are Hiroshima, Okayama, Shimane, Tottori, and Yamaguchi. 
Traveling around the region is easy with many options. There are many airports for people to use. Hiroshima Airport is the largest one. It sits just east of Hiroshima city. You can also find smaller airports like Izumo or Tottori. 
The Chūgoku region is a distinct geographic area in Japan. It sits at the westernmost end of Honshū, which is the largest island in the country. 
The landscape of Chūgoku is not mostly flat. Instead, it is characterized by irregular rolling hills and limited areas of plain land. A major feature of the region is its central mountain range. These mountains run from east to west through the middle of the area. This range creates a physical divide that splits the region into two separate parts. 
Modern tourism often refers to the area as the San'in-San'yō region. This naming system is based on the concepts of yin and yang. The northern part is called San'in, which means "yin of the mountains." This side faces the Sea of Japan. It has an agricultural economy, meaning much of the work involves farming. The southern part is called San'yō, meaning "yang of the mountains." This side faces the Seto Inland Sea. San'yō is a center for heavy industry, which involves large-scale manufacturing. 
The name Chūgoku literally translates to "middle country." The exact origin of this name remains unclear to historians. In ancient Japan, the land was divided into provinces called koku. These provinces were classified by their power and their distance from the administrative center in Kansai. One theory suggests Chūgoku referred to the collection of "middle countries" located to the west of the capital. However, fewer than half of the provinces in the modern region were actually classified as middle countries. Another theory is that the name described provinces located between Kansai and Kyūshū. Kyūshū was historically important as a link to mainland Asia.
There is also a linguistic connection to the name of the country China. In Japanese, the characters for Chūgoku are also used to mean China. In Mandarin Chinese, the same characters are used but pronounced Zhōngguó. To avoid confusion between the region and the country, different terms were used in the past. Before the end of the Second World War, China was often called shina. However, the term shina became offensive due to its use during the Sino-Japanese War. As a result, the term was abandoned, and Chūgoku is now used for the Japanese region.
The population of the region is concentrated in specific urban centers. The two largest metropolitan areas are Hiroshima and Okayama. Together, these two areas have a population of 2.808 million people. The total Urban Employment Area for the whole region is about 3 million people. Hiroshima is a major industrial metropolis with more than one million residents. It is a designated city and was rebuilt after being destroyed by an atomic bomb in 1945. Okayama is also a designated city with a population of 720,000. 
Outside of these major cities, the region is very rural and sparsely populated. The population has seen a steady decline since 1992. Some prefectures have actually seen their numbers drop since 1985. The region reached its highest population point in 1991, with roughly 7.8 million people. Traveling through these diverse areas is supported by several airports. Hiroshima Airport is the largest and is located east of Hiroshima. Other smaller airports include Izumo, Tottori, and Yamaguchi Ube. 
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