Yamagata山形県
Nagai 長井市
Data last updated:
Nagai, Yamagata, Japan has a population of 24,561 (2025 national census). IPSS projections estimate 23,140 by 2030 and 16,881 by 2050 (a decrease of about 36.4% from 2020), with the share of residents aged 65+ rising from 35.7% in 2020 to 44.6%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025年实际
24,561人
2030年预测
23,140人
▼ -12.8%
2040年预测
20,005人
▼ -24.6%
2050年预测
16,881人
▼ -36.4%
Change vs. 2020 census
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输入年龄，即可查看您50、60、70、80岁时長井市的人口。
Yamagata (山形県)的其他市区町村
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。
Nagai Population Table (1980–2050)
Population by year: national census results (restated to current municipal boundaries) and IPSS (2023) projections based on the 2020 census.
| Year | Population | vs 2020 | Type |
|---|---|---|---|
| 1980 | 33,286 | ▲ +25.4% | Census |
| 1985 | 33,490 | ▲ +26.2% | Census |
| 1990 | 33,260 | ▲ +25.3% | Census |
| 1995 | 32,727 | ▲ +23.3% | Census |
| 2000 | 31,987 | ▲ +20.5% | Census |
| 2005 | 30,929 | ▲ +16.5% | Census |
| 2010 | 29,473 | ▲ +11.0% | Census |
| 2015 | 27,757 | ▲ +4.6% | Census |
| 2020 | 26,543 | — | Census |
| 2025 | 24,561 | ▼ -7.5% | Census |
| 2030 | 23,140 | ▼ -12.8% | Projection |
| 2035 | 21,564 | ▼ -18.8% | Projection |
| 2040 | 20,005 | ▼ -24.6% | Projection |
| 2045 | 18,441 | ▼ -30.5% | Projection |
| 2050 | 16,881 | ▼ -36.4% | Projection |
About Nagai
Overview
Nagai (長井市) is a municipality in Yamagata, Japan, with a population of 24,561 as of 2025.
Population Projection of Nagai
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Nagai's population is expected to reach 23,140 by 2030 (-12.8%), 20,005 by 2040 (-24.6%), and 16,881 by 2050 (-36.4%). A significant population decline is projected over the next three decades.
Aging Rate of Nagai
The aging rate (percentage of residents aged 65 and over) is 35.7% as of 2020 and is projected to rise to 44.6% by 2050. Over 40% of residents will be elderly, significantly affecting healthcare and social services needs.
National Comparison
Nagai's population decline rate exceeds the national average.
National and Prefectural Rank
- Population decline rate: Ranked #841 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #905 out of 1903 nationwide.
- Population size: Ranked #998 out of 1917 nationwide.
- Related: National rankings / All municipalities in Yamagata
Yamagata (山形県)的收入水平: Yamagata (山形県)的平均年收入（按年龄、性别、企业规模）jpsalary / 厚生劳动省 工资结构基本统计调查