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Isesaki
Isesaki (伊勢崎市, Isesaki-shi) is a city located in Gunma Prefecture, Japan. As of 1 September 2020[update], the city had an estimated population of 213,303 in 91,789 households, and a population density of 1500 persons per km2. The total area of the city is 139.44 square kilometres (53.84 sq mi).
Isesaki is located in the northwestern part of the Kantō Plain of southern Gunma Prefecture. It is adjacent to Saitama Prefecture across the Tone River, which runs through the southern part of the city. The distance to the center of the city is about 15 kilometres (9.3 mi) from Maebashi City, the prefectural capital of Gunma, 20 kilometres (12 mi) from Takasaki, and about 95 kilometres (59 mi) from central Tokyo.
Isesaki has a humid subtropical climate (Köppen Cfa) characterized by warm summers and cold winters with heavy snowfall. The average annual temperature in Isesaki is 14.5 °C. The average annual rainfall is 1256 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.6 °C, and lowest in January, at around 3.3 °C. On August 5th 2025, Isesaki recorded a temperature of 41.8°C, the hottest temperature ever registered in Japanese history.
Per Japanese census data, the population of Isesaki has increased steadily over the past 60 years.
Isesaki developed during the Sengoku period as a castle town surrounding Akaishi Castle, a stronghold in southern Kōzuke Province controlled by the Yura clan. During the Edo period, it was the center of Isesaki Domain, a feudal domain under the Tokugawa shogunate controlled by the Sakai clan. The area also contained two post towns on the Nikkō Reiheishi Kaidō, a subroute to Nikkō Kaidō which connected the Nakasendō directly with Nikkō, bypassing Edo.
Isesaki Town was created within Sai District, Gunma Prefecture on April 1, 1889 with the creation of the modern municipalities system after the Meiji Restoration. Sai District and Nawa District merged to form Sawa District in 1896. It merged with the villages of Uehasu and Moro to form the city of Isesaki on September 13, 1940. On January 10, 1955 the village of Misato was annexed by Isesaki, followed by the villages of Nawa, Toyouke and Miyagō on March 25 of the same year.
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Isesaki
Isesaki (伊勢崎市, Isesaki-shi) is a city located in Gunma Prefecture, Japan. As of 1 September 2020[update], the city had an estimated population of 213,303 in 91,789 households, and a population density of 1500 persons per km2. The total area of the city is 139.44 square kilometres (53.84 sq mi).
Isesaki is located in the northwestern part of the Kantō Plain of southern Gunma Prefecture. It is adjacent to Saitama Prefecture across the Tone River, which runs through the southern part of the city. The distance to the center of the city is about 15 kilometres (9.3 mi) from Maebashi City, the prefectural capital of Gunma, 20 kilometres (12 mi) from Takasaki, and about 95 kilometres (59 mi) from central Tokyo.
Isesaki has a humid subtropical climate (Köppen Cfa) characterized by warm summers and cold winters with heavy snowfall. The average annual temperature in Isesaki is 14.5 °C. The average annual rainfall is 1256 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.6 °C, and lowest in January, at around 3.3 °C. On August 5th 2025, Isesaki recorded a temperature of 41.8°C, the hottest temperature ever registered in Japanese history.
Per Japanese census data, the population of Isesaki has increased steadily over the past 60 years.
Isesaki developed during the Sengoku period as a castle town surrounding Akaishi Castle, a stronghold in southern Kōzuke Province controlled by the Yura clan. During the Edo period, it was the center of Isesaki Domain, a feudal domain under the Tokugawa shogunate controlled by the Sakai clan. The area also contained two post towns on the Nikkō Reiheishi Kaidō, a subroute to Nikkō Kaidō which connected the Nakasendō directly with Nikkō, bypassing Edo.
Isesaki Town was created within Sai District, Gunma Prefecture on April 1, 1889 with the creation of the modern municipalities system after the Meiji Restoration. Sai District and Nawa District merged to form Sawa District in 1896. It merged with the villages of Uehasu and Moro to form the city of Isesaki on September 13, 1940. On January 10, 1955 the village of Misato was annexed by Isesaki, followed by the villages of Nawa, Toyouke and Miyagō on March 25 of the same year.