ŌshimaNagasaki PrefectureNishisonogi DistrictSaikai CityJapanese municipal history

Ōshima Town: A History of the Former Nagasaki Municipality

Ōshima Town: A History of the Former Nagasaki Municipality Located within the scenic landscapes of Nagasaki Prefecture, Ōshima (Ōshima-chō) was once a distinct town situated in the Nishis...

Ōshima Town: A History of the Former Nagasaki Municipality

Located within the scenic landscapes of Nagasaki Prefecture, Ōshima (Ōshima-chō) was once a distinct town situated in the Nishisonogi District. While it no longer exists as an independent administrative entity, its history and geography remain an integral part of the region's development.

Key Facts

  • Former Location: Nishisonogi District, Nagasaki Prefecture, Japan.
  • Population: Approximately 6,046 residents (as of 2003).
  • Land Area: 13.33 square kilometers.
  • Population Density: 453.56 persons per km².
  • Current Status: Merged into the city of Saikai on April 1, 2005.

Geography and Demographics

Before its merger, Ōshima was characterized by a compact land area of 13.33 km². According to 2003 estimates, the town supported a population of 6,046 people. This resulted in a population density of 453.56 persons per square kilometer, reflecting the residential distribution of the Nishisonogi District area.

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The Formation of Saikai City

In a significant administrative restructuring on April 1, 2005, Ōshima ceased to be an independent town. It joined four other municipalities from the Nishisonogi District—Saikai (former), Ōseto, Sakito, and Seihi—to form the new city of Saikai.

This merger was a consolidation of five equal towns, creating a larger administrative hub to better manage the region's resources and governance. By May 2021, the combined population of the newly formed Saikai City reached 26,652 residents.

Summary of Ōshima Town (Pre-2005)
Attribute Detail
District Nishisonogi District
Prefecture Nagasaki
Total Area 13.33 km²
Estimated Population (2003) 6,046
Merger Date April 1, 2005
Successor City Saikai

Frequently Asked Questions

Where was Ōshima town located?

Ōshima was located in the Nishisonogi District of Nagasaki Prefecture, Japan.

When did Ōshima stop being an independent town?

Ōshima officially merged with other towns to form Saikai City on April 1, 2005.

Which other towns merged with Ōshima to create Saikai City?

The merger included the former towns of Saikai, Ōseto, Sakito, and Seihi.

What was the population of Ōshima before the merger?

As of 2003, the town had an estimated population of 6,046 people.

How large was the total area of Ōshima?

The total area of the town was 13.33 square kilometers.

References

  1. "ホーム|西海市". 西海市 (in Japanese). Retrieved 2024-02-15. 西海市は、平成17年4月1日に旧西彼町と旧西海町、旧大島町、旧崎戸町、旧大瀬戸町の5町が対等合併し、人口26,652人(2021年5月末日現在住基人口)の新たな市として誕生しました。