日本人口减少模拟器

Nagasaki長崎県

Saikai 西海市

Data last updated:

2020年

(实际)

26,296人

2030年

(预测)

20,934人

▼ -20.4%

2040年

(预测)

16,641人

▼ -36.7%

2050年

(预测)

12,827人

▼ -51.2%

老龄化率（65岁以上）: 2020年 38.8%→2050年 50.4%

Nagasaki (長崎県)的其他市区町村

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查看Nagasaki (長崎県)的所有市区町村 →

数据来源

  • 日本政府统计综合窗口(e-Stat)（https://www.e-stat.go.jp/）
  • 国立社会保障・人口问题研究所「日本地区别未来推计人口（令和5年推计）」

※本服务使用e-Stat的API功能，但服务内容不受日本政府保证。

About Saikai

Overview

Saikai (西海市) is a municipality in Nagasaki, Japan, with a population of 26,296 as of 2020.

Population Projection

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Saikai's population is expected to reach 20,934 by 2030 (-20.4%), 16,641 by 2040 (-36.7%), and 12,827 by 2050 (-51.2%). The town is projected to lose more than half its population over 30 years.

Aging Outlook

The aging rate (percentage of residents aged 65 and over) is 38.8% as of 2020 and is projected to rise to 50.4% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.

National Comparison

Saikai is experiencing one of the faster rates of population decline in Japan.

Frequently Asked Questions

Q.What is the current population of Saikai, Nagasaki?
A.According to the 2020 national census, Saikai has a population of 26,296.
Q.What is the projected population of Saikai in the future?
A.According to IPSS projections, Saikai's population is expected to be 20,934 in 2030, 16,641 in 2040, and 12,827 in 2050.
Q.What is the population decline rate of Saikai?
A.Over the 30 years from 2020 to 2050, Saikai's population is projected to change by -51.2%. The 10-year change is -20.4% and the 20-year change is -36.7%.
Q.What is the aging rate of Saikai?
A.Saikai's aging rate (percentage aged 65 and over) is 38.8% as of 2020, projected to rise to 50.4% by 2050.
Q.Where does this population data come from?
A.Historical data is sourced from Japan's national census via the e-Stat API (Statistics Bureau of Japan). Future projections are from the National Institute of Population and Social Security Research (IPSS) "Regional Population Projections 2023".
Q.Is the data up to date?
A.Historical data uses the 2020 national census results. Future projections use the IPSS 2023 edition. Data will be updated as new census results become available.

Municipalities with Similar Trends

Aomori Oowani大鰐町
▼ -58.0%
Gifu Hichisou七宗町
▼ -58.1%
Akita Gojoume五城目町
▼ -58.2%
Gifu Shirakawa白川町
▼ -58.2%
Miyagi Minamisanriku南三陸町
▼ -58.3%
Fukushima Samegawa鮫川村
▼ -58.3%

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