日本人口减少模拟器

Nagano長野県

Iiyama 飯山市

Data last updated:

2020年

(实际)

19,547人

2030年

(预测)

16,208人

▼ -17.1%

2040年

(预测)

13,176人

▼ -32.6%

2050年

(预测)

10,400人

▼ -46.8%

老龄化率（65岁以上）: 2020年 38.1%→2050年 51.7%

Nagano (長野県)的其他市区町村

Nagano長野市Matsumoto松本市Ueda上田市Okaya岡谷市Iida飯田市Suwa諏訪市Suzaka須坂市Komoro小諸市Ina伊那市Komagane駒ヶ根市Nakano中野市Oomachi大町市Chino茅野市Shiojiri塩尻市Saku佐久市Chikuma千曲市Toumi東御市Azumino安曇野市Koumi小海町Kawakami川上村
查看Nagano (長野県)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 Iiyama

Overview

Iiyama (飯山市) is a municipality in Nagano, Japan, with a population of 19,547 as of 2020.

Population Projection

According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Iiyama's population is expected to reach 16,208 by 2030 (-17.1%), 13,176 by 2040 (-32.6%), and 10,400 by 2050 (-46.8%). A significant population decline is projected over the next three decades.

Aging Outlook

The aging rate (percentage of residents aged 65 and over) is 38.1% as of 2020 and is projected to rise to 51.7% by 2050. More than half of residents will be seniors, placing the town in the "marginal municipality" category.

National Comparison

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

Frequently Asked Questions

Q.What is the current population of Iiyama, Nagano?
A.According to the 2020 national census, Iiyama has a population of 19,547.
Q.What is the projected population of Iiyama in the future?
A.According to IPSS projections, Iiyama's population is expected to be 16,208 in 2030, 13,176 in 2040, and 10,400 in 2050.
Q.What is the population decline rate of Iiyama?
A.Over the 30 years from 2020 to 2050, Iiyama's population is projected to change by -46.8%. The 10-year change is -17.1% and the 20-year change is -32.6%.
Q.What is the aging rate of Iiyama?
A.Iiyama's aging rate (percentage aged 65 and over) is 38.1% as of 2020, projected to rise to 51.7% 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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