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Kawaguchi | Japan

Kawaguchi (川口市 Kawaguchi-shi) is a city located in Saitama Prefecture, Japan. As of 1 March 2018, the city had an estimated population of 600,388, and a population density of 9,691.49 persons per km². Its total area is 61.95 square kilometres (23.92 sq mi). It is the Greater Tokyo Area's 8th most populated city (after passing Hachioji), and second largest in Saitama Prefecture.

As of May 1, 2010, registered population was 516,409, including 20,808 alien residents, continuing a trend of population growth in the city since 1933 when the city was founded. There has been a gradual increase in the number of non-Japanese residents living in the city because of the convenient location to Tokyo and relatively low rent. Now, the number of people from China is the largest, followed by Korea and Philippines.

Kawaguchi is a typical suburb city of Tokyo metropolitan area, where population greatly changes between daytime and nighttime due to commute to big cities, especially to Tokyo. In mid 1990s, population growth rate declined, but recent apartment construction boom in the city helps increase population growth rate again. The number of children continues to decrease in accordance with the decline of number of birth: 4,735 in 2009 down from the highest number of 7,932 in 1971. By contrast, the rate of people over the age of 65 is increasing, approximately 18.5% as of January 1, 2010. Yet the number is below the national average.

The modern town of Kawaguchi was established within Kitaadachi District, Saitama on April 1, 1889 with the establishment of the municipalities system. Kawaguchi was elevated to city status on April 1, 1933 by the merger of Kawaguchi with the neighboring villages of Aoki, Minami-Hirayanagi and Yokozone. The city expanded by annexing the town of Hatogaya and villages of Shiba, Kamine and Shingō in 1940. However, Hatogaya separated from Kawaguchi in 1948 in accordance with the results of a referendum.

Kawaguchi has experienced many disasters, including flood, earthquake and war. The Arakawa River has inundated Kawaguchi countless times and ruined agriculture, which resulted in famines. Also, the 1923 Great Kantō earthquake damaged buildings in Kawaguchi, killing 99 people.

Currently, the population of Kawaguchi continues to increase, and many tall apartment buildings are being built around train stations. This is because many casting foundries moved to suburban industrial parks and the former sites were turned into residential areas.

On April 1, 2001, Kawaguchi was designated a special city, with increased local autonomy.

On October 11, 2011, Kawaguchi re-absorbed the city of Hatogaya.

Saitama Prefecture (埼玉県 Saitama-ken) is a prefecture of Japan located in the Kantō region. The capital is the city of Saitama.

This prefecture is part of the Greater Tokyo Area, and most of Saitama's cities can be described as suburbs of Tokyo, to which a large number of residents commute each day.

Saitama Prefecture is bordered by Tokyo, Chiba, Ibaraki, Tochigi, Gunma, Nagano, and Yamanashi Prefectures. It is located central-west of the Kanto region, measuring 103 km from east to west and 52 km from north to south. At 3,798 km2, it ranks as the ninth-smallest prefecture. The eastern border with Chiba Prefecture is defined by the Edo River. The northern and north-western border lines with Gunma Prefecture are marked by the Tone River and the Kanagawa River and the drainage divides of the Arakawa River and Kanagawa River. The southwestern border is defined by the drainage divides of the Arakawa River, Tama River, and Fuefuki River. The eastern section of the southern border line, however, does not overlap with any geological feature.

The topography of Saitama Prefecture is largely divided by the Hachiōji Tectonic Line, which runs through Kodama, Ogawa, and Hannō, into the western mountain area and the eastern lowland area. The altitude, highest on the western side, gradually lowers eastward from mountain ranges to hills to plateaus to lowlands. The eastern lowlands and plateaus occupy 67.3% of the area.

The eastern side, part of the Kantō Plain, can be further divided into nine separate expanses of hills and ten plateaus. The former occupy small areas neighboring the Kantō Mount Range, including the Hiki Hills and Sayama Hills. The latter are mainly surrounded by alluvial flood plains. In the southeastern portion of the prefecture, the Ōmiya Plateau stands in a southeastward direction, sandwiched by the Furutone River to the east and the Arakawa River to the west.

The western side of the prefecture belongs to the Kantō Mountain Range with Chichibu Basin located in its center. The area to the west of the basin features high peaks such as Mount Sanpō (2,483 m) and Mount Kōbushi (2,475 m), in which the Arakawa River has its source. Most of the land is contained in Chichibu Tama Kai National Park. The area to east of the basin consists of relatively low mountains.

The most often used subdivision of the region is dividing it to "North Kantō" (北関東 Kita-Kantō), consisting of Ibaraki, Tochigi, and Gunma Prefectures, and "South Kantō" (南関東 Minami-Kantō), consisting of Saitama (sometimes classified North),[citation needed][by whom?] Chiba, the Tokyo Metropolis (sometimes singulated),[citation needed] and Kanagawa Prefectures.[citation needed] South Kantō is often regarded as synonymous with the Greater Tokyo Area. As part of Japan's attempts to predict earthquakes, an area roughly corresponding to South Kantō has been designated an 'Area of Intensified Observation' by the Coordinating Committee for Earthquake Prediction.

The Japanese House of Representatives' divides it into the North Kantō (北関東 Kita-Kantō) electorate which consists of Ibaraki, Tochigi, Gunma and Saitama Prefectures, Tokyo electorate, and the South Kantō (南関東 Minami-Kantō) electorate which consists of Chiba, Kanagawa and Yamanashi Prefectures. (Note that Yamanashi is out of Kantō region in the orthodox definition.)

Keirin's South Kantō (南関東 Minami-Kantō) consists of Chiba, Kanagawa and Shizuoka Prefectures.

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