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Ōamishirasato City Hall
Ōamishirasato City Hall
Flag of Ōamishirasato
Official seal of Ōamishirasato
Location of Ōamishirasato in Chiba Prefecture
Location of Ōamishirasato in Chiba Prefecture
Ōamishirasato is located in Japan
Coordinates: 35°31′N 140°19′E / 35.517°N 140.317°E / 35.517; 140.317Coordinates: 35°31′N 140°19′E / 35.517°N 140.317°E / 35.517; 140.317
Country Japan
Region Kantō
Prefecture Chiba Prefecture
 • Total 58.06 km2 (22.42 sq mi)
Population (December 2012)
 • Total 51,176
 • Density 881/km2 (2,280/sq mi)
Time zone Japan Standard Time (UTC+9)
- Tree Osmanthus
- Flower Cosmos (plant)
Phone number 0475-70-0300
Address 115-2 Ōami, Ōamishirasato-shi, Chiba-ken 299-3292
Website City of Ōamishirasato Home Page

Ōamishirasato (大網白里市 Ōamishirasato-shi?) is a city located in the east-central Bōsō Peninsula of Chiba Prefecture, Japan, bordered by Pacific Ocean to the east.

As of December 2012, the city has an estimated population of 51,176 and a population density of 881 persons per km². The total area is 58.06 km².

Surrounding Municipalities[edit]


Ōami Town and Shirasato Village were created during the organization of Sanbu District within Chiba Prefecture on April 1, 1889. Shirasato was elevated to town status on August 10, 1935. Ōami Town expanded through the annexation of neighboring villages of Yamane and Mizuho on April 1, 1951. Ōami and Shirasato Towns and Masuho Village were merged to create Ōamishirasato Town on December 1, 1954. The town annexed a portion of Honnō Town in a boundary adjustment of November 1, 1957.

Elevation to city status[edit]

Ōamishirasato was elevated to city status on January 1, 2013. The city, formerly known as Ōamishirasato-machi, is now known in the Japanese as Ōamishirasato-shi (大網白里市?). The town is no longer part of Sanbu District, and the designation of Sanbu District is not a required part of postal addresses.[1][2][3]


Ōamishirasato is a regional commercial center, and a bedroom community for the nearby metropolis of Chiba.



Sister city relations[edit]

Noted people from Ōamishirasato[edit]


  1. ^ Ishii, Sōseki, ed. (May 2012). 平成25年1月1日 大網白里市誕生に向けて [Toward the formation of the city of Ōamishirasato on Jan. 1, 2013] (PDF). Hōkoku Ōamishirasato (in Japanese). Ōamishirasato-machi, Chiba Prefecture, Japan: Ōamishirasato-machi, Hissho Kōhōka, Kōhō Tōkeihan (541): 2. Retrieved May 10, 2012. 
  2. ^ Yoshimura, Kenji (March 2, 2012). 大網白里町:名称「大網白里市」に来年1月 [Town of Ōamishirasato will be named "City of Ōamishirasato" in January 2013]. Mainichi Shinbun (in Japanese). Tokyo: Mainichi Newspapers. OCLC 10684368. Retrieved May 10, 2012. 
  3. ^ 新市へ58年の歴史に幕 大網白里町で閉町式 [After 58 Years, a New City: a Ceremony for the Closing of the Town of Ōamishirasato]. Chiba Nippo (in Japanese). Chiba, Chiba Prefecture, Japan: Chiba Nippo Co., Ltd. 2012-12-29. Retrieved 2012-12-31. 

External links[edit]

Media related to Ōamishirasato, Chiba at Wikimedia Commons