Semboku (仙北市, Semboku-shi) is a city located in Akita Prefecture, Japan. As of 31 January 2023^[update], the city had an estimated population of 24,045 in 10,398 households,^[1] and a population density of 22 persons per km². The total area of the city is 1,093.56 square kilometers (422 sq mi).

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Semboku 仙北市
City
Semboku City Hall Kakunodate Office
Flag Seal
Location of Semboku in Akita Prefecture
Semboku
Coordinates: 39°42′06″N 140°43′53.4″E
Country	Japan
Region	Tōhoku
Prefecture	Akita
Area
• Total	1,093.56 km2 (422.23 sq mi)
Population  (January 31, 2023)
• Total	24,045
• Density	22/km2 (57/sq mi)
Time zone	UTC+9 (Japan Standard Time)
Phone number	0187-43-1111
Address	30 Miyanoshiro, Obonai, Tazawako, Semboku-shi, Akita-ken 014-1201
Climate	Dfa
Website	Official website
Symbols
Bird	Golden eagle
Flower	Hydrangea
Tree	Beech

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Semboku is located in the mountains of east-central Akita Prefecture, bordering on Iwate Prefecture and the Ōu Mountains on the east. Lake Tazawa, the deepest lake in Japan, is located in the center of the city borders. Parts of the city are within the borders of the Towada-Hachimantai National Park.

Per Japanese census data,^[6] the population of Semboku peaked in the early 1960s and has since declined to pre-1920 levels.

More information Year, Pop. ...

Historical population

Year Pop. ±% p.a. 1920 29,123 —     1930 32,017 +0.95% 1940 37,453 +1.58% 1950 43,358 +1.47% 1960 43,765 +0.09% 1970 39,216 −1.09%	Year Pop. ±% p.a. 1980 39,098 −0.03% 1990 36,297 −0.74% 2000 33,565 −0.78% 2010 29,572 −1.26% 2020 24,610 −1.82%
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The area of present-day Semboku was part of ancient Dewa Province. During the Edo period, the area came under the control of the Satake clan, who had been relocated to Kubota Domain from their former holdings in Hitachi Province. After the start of the Meiji period, the area became part of Semboku District, Akita Prefecture in 1878. The town of Kakunodate was established on April 1, 1889 with the establishment of the modern municipalities system.

The city of Semboku was established on March 22, 2005, from the merger of the towns of Kakunodate and Tazawako, and the village of Nishiki (all from Semboku District).

Semboku has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 18 members. The city contributes one member to the Akita Prefectural Assembly. In terms of national politics, the city is part of the Akita 3rd District of the lower house of the Diet of Japan.

The economy of Semboku is based on agriculture, forestry and seasonal tourism. The city is a noted producer of craft beer, soy sauce and miso.

One event that attracts many tourists is the Rokugō Kamakura Festival, which is held each February 11 to 15.^[7]

Semboku has seven public elementary schools and five public middle schools operated by the city government and one public high school operated by the Akita Prefectural Board of Education. The prefecture also operates a special education school for the handicapped.

• Buke-yashiki (samurai residences) street, Kakunodate
• Lake Tazawa

• Tamagawa Hot Spring has the highest flow rate of any hot spring in Japan at 150 liters/second, which feeds a 3 meter wide stream with a temperature of 98 degrees C. The water from Tamagawa Hot Spring is also very acidic.^{[citation needed]}
• Towada-Hachimantai National Park
• Lake Tazawa – the deepest lake in Japan
• Ōfuka Onsen
• Kakunodate samurai residences

• Ayako Fuji, musician
• Norihisa Satake, politician
• Shigehiro Taguchi, basketball player
• Yasuhiko Takahashi, wheel gymnastics acrobat