Nishisonogi District, Nagasaki Explained

As of January 1, 2009, the district has an estimated population of 72,238 and a density of 1460 persons per km². The total area is 49.54 km².

Towns and villages

January 1, 1955 the village of Fukuda merged into the city of Nagasaki.
On January 4, 2005, six towns, Iōjima, Kōyagi, Nomozaki, Sanwa, Sotome and Takashima merged into the city of Nagasaki.
On March 1, 2005, the town of Tarami, along with the towns of Iimori, Konagai, Moriyama and Takaki, all from Kitatakaki District, merged into the expanded city of Isahaya.
On April 1, 2005, the old town of Saikai absorbed the towns of Ōseto, Ōshima, Sakito and Seihi to form the new city of Saikai.^[1]
On January 4, 2006, the town of Kinkai merged into the city of Nagasaki.

Web site: ホーム西海市 . 2024-02-15 . 西海市 . ja . 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。.