Gunma群馬県
Ooizumi 大泉町
Data last updated:
Ooizumi, Gunma, Japan has a population of 41,417 (2025 national census). IPSS projections estimate 40,788 by 2030 and 35,955 by 2050 (a decrease of about 14.6% from 2020), with the share of residents aged 65+ rising from 22.7% in 2020 to 33.2%.Sources: Japan Census (Statistics Bureau), IPSS Regional Population Projections (2023)
2025年
(实际)
41,417人
2030年
(预测)
40,788人
▼ -3.1%
2040年
(预测)
38,614人
▼ -8.3%
2050年
(预测)
35,955人
▼ -14.6%
Change vs. 2020 census
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Gunma (群馬県)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。
Ooizumi 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 | 31,282 | ▼ -25.7% | Census |
| 1985 | 35,925 | ▼ -14.6% | Census |
| 1990 | 39,232 | ▼ -6.8% | Census |
| 1995 | 41,100 | ▼ -2.3% | Census |
| 2000 | 41,403 | ▼ -1.6% | Census |
| 2005 | 41,466 | ▼ -1.5% | Census |
| 2010 | 40,257 | ▼ -4.4% | Census |
| 2015 | 41,202 | ▼ -2.1% | Census |
| 2020 | 42,089 | — | Census |
| 2025 | 41,417 | ▼ -1.6% | Census |
| 2030 | 40,788 | ▼ -3.1% | Projection |
| 2035 | 39,794 | ▼ -5.5% | Projection |
| 2040 | 38,614 | ▼ -8.3% | Projection |
| 2045 | 37,305 | ▼ -11.4% | Projection |
| 2050 | 35,955 | ▼ -14.6% | Projection |
About Ooizumi
Overview
Ooizumi (大泉町) is a municipality in Gunma, Japan, with a population of 41,417 as of 2025.
Population Projection of Ooizumi
According to projections by Japan's National Institute of Population and Social Security Research (IPSS), Ooizumi's population is expected to reach 40,788 by 2030 (-3.1%), 38,614 by 2040 (-8.3%), and 35,955 by 2050 (-14.6%). A modest population change is expected.
Aging Rate of Ooizumi
The aging rate (percentage of residents aged 65 and over) is 22.7% as of 2020 and is projected to rise to 33.2% by 2050. The aging rate will remain below the most severe Japanese averages.
National Comparison
Ooizumi's demographic trajectory is similar to the national average.
National and Prefectural Rank
- Population decline rate: Ranked #1491 out of 1903 municipalities nationwide.
- Aging rate in 2050: Ranked #1717 out of 1903 nationwide.
- Population size: Ranked #764 out of 1917 nationwide.
- Related: National rankings / All municipalities in Gunma
Gunma (群馬県)的收入水平: Gunma (群馬県)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