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Kasamori-ji in Chonan
Kasamori-ji in Chonan
Flag of Chōnan
Official seal of Chōnan
Location of Chōnan in Chiba Prefecture
Location of Chōnan in Chiba Prefecture
Chōnan is located in Japan
Coordinates: 35°23′N 140°14′E / 35.383°N 140.233°E / 35.383; 140.233Coordinates: 35°23′N 140°14′E / 35.383°N 140.233°E / 35.383; 140.233
Country Japan
Region Kantō
Prefecture Chiba Prefecture
District Chōsei
 • Total 65.38 km2 (25.24 sq mi)
Population (April 2012)
 • Total 8,774
 • Density 134/km2 (350/sq mi)
Time zone Japan Standard Time (UTC+9)
• Tree Japanese cypress
• Flower Cherry blossom, safflower
• Bird Japanese bush-warbler
Phone number 0475-46-2111
Address 2110 Chōnan, Chōnan-machi, Chōsei-gun, Chiba-ken
Website Town of Chōnan

Chōnan (長南町, Chōnan-machi) is a town located in Chōsei District, Chiba Prefecture, Japan.

As of April 2012, the town had a population of 8,774 and a population density of 134 persons per km2. The total area was 65.38 square kilometres (25.24 sq mi).


Located in the mountainous terrains that divides the Bōsō Peninsula, Chōnan has relatively little flat land. Like other municipalities in the region, the town maintains agricultural reservoirs. Several golf courses dot the landscape.

Neighboring municipalities[edit]


Chōnan is rich in archeological sites from the Jōmon period, Yayoi period, and Kofun period periods. Under the ritsuryō reforms of the Nara period the area of present-day Chōnan became part of Kazusa Province. Two Tendai Buddhist temples were established in this period, Kasamori-ji and Chōfuku-ji. At the end of the Heian period the area came under the control of the military leader Taira no Tadatsune, and his descendents continued their control of the area in the Kamakura period. In the 1456 the Takeda clan built Chōnan Castle as an extension of the larger Mariyatsu Castle. After the establishment of the Tokugawa shogunate Chōnan became a major distribution center of goods, most notably salt, passing through the Bōsō Peninsula.[1] The modern town of Chōnan was created on February 11, 1955 from the merger of the former town of Chōnan with neighboring villages of Nishimura, Higashimura and Toyosaka.


The principal agricultural output of Chōnan is rice, and shiitake mushrooms and lotus root are cultivated in the town. There are also some small-scale dairy farms.[2]



Chōnan is not serviced by train.


Visitor attractions[edit]

  • Kasamori-ji
  • Kasamori Temple Forest Nature Area
  • Hōon-ji
  • Shōen-ji
  • Shōtoku-ji
  • Chōfukuju-ji

External links[edit]


  1. ^ "Chōnan-machi". Nihon Rekishi Chimei Taikei (日本歴史地名大系 “Compendium of Japanese Historical Place Names”) (in Japanese). Tokyo: Netto Adobansusha. 2012. Retrieved 2012-02-01. 
  2. ^ "Chōnan-machi". Nihon Rekishi Chimei Taikei (日本歴史地名大系 “Compendium of Japanese Historical Place Names”) (in Japanese). Tokyo: Netto Adobansusha. 2012. Archived from the original on 2007-08-25. Retrieved 2012-02-01.